Product Description
| Basic Features of Track Roller Bearing | |
| Types | Stud type track roller bearing Yoke type track roller bearing |
| Series | RSTO… and STO… RNA22…2RS and NA22…RS NATR… and NATV… NUTR… KR… and KRE… KRV… and KRVE… NUKR… and NUKRE… NAST…ZZ PWTR…2RS KR52…NUUP PWKR…2RS |
| Material | Bearing Steel(GCr15, 100Cr6) SPCC St14 |
| Dimension | Metric and Inch |
| Dimension Range | 15mm~200mm(bore diameter) |
| MOQ | 1 |
| Delivery Time | 15-45 days |
| Sea Ports | ZheJiang HangZhou HangZhou |
Why Choose HECTO?
1. More than 20 years of manufacturing and exporting experiences
2. an IATF16949 company
3. 100% inspecting of products
4. More competitive prices with better quality
5. More than 99% of delivery in time
6. Rapid response of your emails and questions
7. Products can be traced back
RSTO… and STO… series
| Bearing No. (without inner ring) |
Weight (g) |
Bearing No. (with inner ring) |
Weight (g) |
Dimensions(mm) | Basic Load Rating(KN) | Limiting Speed (RPM) |
|||||||
| d | D | C | B | Fw | E | r | Cr | Cor | |||||
| RSTO 5TN | 8.5 | – | – | – | 16 | 7.8 | – | 7 | 10 | 0.3 | 2.55 | 2.55 | 16000 |
| RSTO 6TN | 12.5 | STO 6TN | 17 | 6 | 19 | 9.8 | 10 | 10 | 13 | 0.3 | 3.75 | 4.5 | 10000 |
| RSTO 8TN | 21 | STO 8TN | 26 | 8 | 24 | 9.8 | 10 | 12 | 15 | 0.3 | 4.2 | 5.5 | 8000 |
| RSTO 10 | 42 | STO 10 | 49 | 10 | 30 | 11.8 | 12 | 14 | 20 | 0.3 | 8.4 | 9.2 | 5500 |
| RSTO 12 | 49 | STO 12 | 57 | 12 | 32 | 11.8 | 12 | 16 | 22 | 0.3 | 8.9 | 10.1 | 4500 |
| RSTO 15 | 50 | STO 15 | 63 | 15 | 35 | 11.8 | 12 | 20 | 26 | 0.3 | 9.1 | 10.7 | 3300 |
| RSTO 17 | 88 | STO 17 | 107 | 17 | 40 | 15.8 | 16 | 22 | 29 | 0.3 | 14.3 | 17.7 | 2800 |
| RSTO 20 | 130 | STO 20 | 152 | 20 | 47 | 15.8 | 16 | 25 | 32 | 0.3 | 16.2 | 21.5 | 2400 |
| RSTO 25 | 150 | STO 25 | 177 | 25 | 52 | 15.8 | 16 | 30 | 37 | 0.3 | 16.5 | 22.9 | 1800 |
| RSTO 30 | 255 | STO 30 | 308 | 30 | 62 | 19.8 | 20 | 38 | 46 | 0.6 | 23.3 | 35 | 1300 |
| RSTO 35 | 375 | STO 35 | 441 | 35 | 72 | 19.8 | 20 | 42 | 50 | 0.6 | 25.5 | 40 | 1100 |
| RSTO 40 | 420 | STO 40 | 530 | 40 | 80 | 19.8 | 20 | 50 | 58 | 1 | 35 | 59.3 | 850 |
| RSTO 45 | 453 | STO 45 | 576 | 45 | 85 | 19.8 | 20 | 55 | 63 | 1 | 25.5 | 43 | 750 |
| RSTO 50 | 481 | STO 50 | 617 | 50 | 90 | 19.8 | 20 | 60 | 68 | 1 | 43.6 | 83.4 | 650 |
RNA22…2RS and NA22…2RS series
| Bearing No. (without inner ring) |
Weight (g) |
Bearing No. (with inner ring) |
Weight (g) |
Dimensions(mm) | Basic Load Rating(KN) | Limiting Speed (RPM) |
||||||||
| d | D | C | B | Fw | D1 | r | r1 | Cr | Cor | |||||
| RNA22/6.2RS | – | NA22/6.2RS | – | 6 | 19 | 11.8 | 12 | 10 | 16 | 0.3 | 0.3 | 4.8 | 4.6 | — |
| RNA2200.2RS | 52 | NA2200.2RS | 60 | 10 | 30 | 13.8 | 14 | 14 | 20 | 0.6 | 0.3 | 8 | 8.5 | 5500 |
| RNA2201.2RS | 57 | NA2201.2RS | 67 | 12 | 32 | 13.8 | 14 | 16 | 22 | 0.6 | 0.3 | 7.5 | 9 | 4700 |
| RNA2202.2RS | 60 | NA2202.2RS | 75 | 15 | 35 | 13.8 | 14 | 20 | 26 | 0.6 | 0.3 | 8.2 | 9.6 | 3400 |
| RNA2203.2RS | 94 | NA2203.2RS | 112 | 17 | 40 | 15.8 | 16 | 22 | 28 | 1 | 0.3 | 9.7 | 10.8 | 3000 |
| RNA2204.2RS | 152 | NA2204.2RS | 177 | 20 | 47 | 17.8 | 18 | 25 | 33 | 1 | 0.3 | 15.2 | 18.3 | 2300 |
| RNA2205.2RS | 179 | NA2205.2RS | 209 | 25 | 52 | 17.8 | 18 | 30 | 38 | 1 | 0.3 | 15.7 | 20 | 1800 |
| RNA2206.2RS | 284 | NA2206.2RS | 324 | 30 | 62 | 19.8 | 20 | 35 | 43 | 1 | 0.6 | 18.4 | 25.5 | 1400 |
| RNA2207.2RS | 432 | NA2207.2RS | 505 | 35 | 72 | 22.7 | 23 | 42 | 50 | 1.1 | 0.6 | 31.8 | 45.7 | 1100 |
| RNA2208.2RS | 530 | NA2208.2RS | 628 | 40 | 80 | 22.7 | 23 | 48 | 57 | 1.1 | 0.6 | 27.5 | 40.5 | 850 |
| RNA2209.2RS | 545 | NA2209.2RS | 655 | 45 | 85 | 22.7 | 23 | 52 | 62 | 1.1 | 0.6 | 28.5 | 43 | 800 |
| RNA2210.2RS | 563 | NA2210.2RS | 690 | 50 | 90 | 22.7 | 23 | 58 | 68 | 1.1 | 0.6 | 43.2 | 70 | 650 |
NATR… and NATV… series
| Bearing No. | Weight (g) |
Bearing No. | Weight (g) |
Dimensions(mm) | Basic Load Rating(KN) | Limiting Speed (RPM) |
||||||
| d | D | B | C | d1 | r | Cr | Cor | |||||
| NATR 5 | 14 | NATR 5PP | 14 | 5 | 16 | 12 | 11 | 12 | 0.15 | 2.8 | 2.5 | 14000 |
| NATV 5 | 15 | NATV 5PP | 15 | 5 | 16 | 12 | 11 | 12 | 0.15 | 7 | 8.6 | 3800 |
| NATR 6 | 20 | NATR 6PP | 20 | 6 | 19 | 12 | 11 | 14 | 0.15 | 3.2 | 3.3 | 11000 |
| NATV 6 | 21 | NATV 6PP | 21 | 6 | 19 | 12 | 11 | 14 | 0.15 | 7.9 | 10.7 | 3100 |
| NATR 8 | 41 | NATR 8PP | 41 | 8 | 24 | 15 | 14 | 19 | 0.3 | 4.8 | 4.8 | 7500 |
| NATV 8 | 42 | NATV 8PP | 42 | 8 | 24 | 15 | 14 | 19 | 0.3 | 10.2 | 12.9 | 2500 |
| NATR 10 | 64 | NATR 10PP | 64 | 10 | 30 | 15 | 14 | 23 | 0.6 | 6.9 | 7 | 5500 |
| NATV 10 | 65 | NATV 10PP | 65 | 10 | 30 | 15 | 14 | 23 | 0.6 | 12.5 | 15.3 | 2100 |
| NATR 12 | 71 | NATR 12PP | 71 | 12 | 32 | 15 | 14 | 25 | 0.6 | 6.9 | 7.1 | 4500 |
| NATV 12 | 72 | NATV 12PP | 72 | 12 | 32 | 15 | 14 | 25 | 0.6 | 13.3 | 17 | 1800 |
| NATR 15 | 103 | NATR 15PP | 103 | 15 | 35 | 19 | 18 | 27 | 0.6 | 10.3 | 14.8 | 3600 |
| NATV 15 | 105 | NATV 15PP | 105 | 15 | 35 | 19 | 18 | 27 | 0.6 | 19.6 | 34.7 | 1600 |
| NATR 17 | 144 | NATR 17PP | 144 | 17 | 40 | 21 | 20 | 32 | 1 | 18.2 | 21.9 | 2900 |
| NATV 17 | 152 | NATV 17PP | 152 | 17 | 40 | 21 | 20 | 32 | 1 | 31.5 | 45.3 | 1400 |
| NATR 20 | 246 | NATR 20PP | 246 | 20 | 47 | 25 | 24 | 37 | 1 | 22.4 | 29.9 | 2400 |
| NATV 20 | 254 | NATV 20PP | 254 | 20 | 47 | 25 | 24 | 37 | 1 | 37.7 | 59.1 | 1300 |
| NATR 25 | 275 | NATR 25PP | 275 | 25 | 52 | 25 | 24 | 42 | 1 | 24 | 34.2 | 1800 |
| NATV 25 | 285 | NATV 25PP | 285 | 25 | 52 | 25 | 24 | 42 | 1 | 43 | 73.6 | 1000 |
| NATR 30 | 470 | NATR 30PP | 470 | 30 | 62 | 29 | 28 | 51 | 1 | 32.9 | 50.3 | 1300 |
| NATV 30 | 481 | NATV 30PP | 481 | 30 | 62 | 29 | 28 | 51 | 1 | 57.1 | 104 | 850 |
| NATR 35 | 635 | NATR 35PP | 635 | 35 | 72 | 29 | 28 | 58 | 1.1 | 34.4 | 55.8 | 1000 |
| NATV 35 | 647 | NATV 35PP | 647 | 35 | 72 | 29 | 28 | 58 | 1.1 | 59.3 | 114.5 | 750 |
| NATR 40 | 805 | NATR 40PP | 805 | 40 | 80 | 32 | 30 | 66 | 1.1 | 38.5 | 66.6 | 850 |
| NATV 40 | 890 | NATV 40PP | 890 | 40 | 80 | 32 | 30 | 66 | 1.1 | 70.8 | 149.1 | 650 |
| NATR 45 | 910 | NATR 45PP | 910 | 45 | 85 | 32 | 30 | 72 | 1.1 | 42.6 | 77.8 | 750 |
| NATV 45 | 935 | NATV 45PP | 935 | 45 | 85 | 32 | 30 | 72 | 1.1 | 74.5 | 164.4 | – |
| NATR 50 | 960 | NATR 50PP | 960 | 50 | 90 | 32 | 30 | 76 | 1.1 | 44.3 | 85.1 | 650 |
| NATV 50 | 990 | NATV 50PP | 990 | 50 | 90 | 32 | 30 | 76 | 1.1 | 78 | 179.8 | 550 |
NUTR… series
| Bearing No. | Weight (g) |
Dimensions(mm) | Basic Load Rating(KN) | Limiting Speed (RPM) |
|||||||||
| d | D | B | C | d1 | r | rs1 | Cr | Cor | Fr perm | For perm | |||
| NUTR 15 | 99 | 15 | 35 | 19 | 18 | 20 | 0.6 | 0.3 | 22.7 | 26.2 | 8.6 | 16.8 | 6500 |
| NUTR 1542 | 158 | 15 | 42 | 19 | 18 | 20 | 0.6 | 0.3 | 22.7 | 26.2 | 21.9 | 21.9 | 6500 |
| NUTR 17 | 147 | 17 | 40 | 21 | 21 | 22 | 1 | 0.5 | 27.7 | 32.4 | 13.1 | 22.6 | 5500 |
| NUTR 1747 | 220 | 17 | 47 | 21 | 21 | 22 | 1 | 0.5 | 27.7 | 32.4 | 28 | 28 | 5500 |
| NUTR 20 | 245 | 20 | 47 | 25 | 24 | 27 | 1 | 0.5 | 39.7 | 44 | 16.4 | 33 | 4200 |
| NUTR 2052 | 321 | 20 | 52 | 25 | 24 | 27 | 1 | 0.5 | 39.7 | 44 | 38.5 | 41 | 4200 |
| NUTR 25 | 281 | 25 | 52 | 25 | 24 | 31 | 1 | 0.5 | 44.7 | 57.2 | 17.3 | 34.5 | 3400 |
| NUTR 2562 | 450 | 25 | 62 | 25 | 24 | 31 | 1 | 0.5 | 44.7 | 57.2 | 50 | 50 | 3400 |
| NUTR 30 | 465 | 30 | 62 | 29 | 28 | 38 | 1 | 0.5 | 63.7 | 89.7 | 23.5 | 46.5 | 2600 |
| NUTR 3072 | 697 | 30 | 72 | 29 | 28 | 38 | 1 | 0.5 | 63.7 | 89.7 | 64 | 64 | 2600 |
| NUTR 35 | 630 | 35 | 72 | 29 | 28 | 44 | 1.1 | 0.6 | 75.1 | 104.6 | 32 | 60 | 2100 |
| NUTR 3580 | 838 | 35 | 80 | 29 | 28 | 44 | 1.1 | 0.6 | 75.1 | 104.6 | 72 | 72 | 2100 |
| NUTR 40 | 816 | 40 | 80 | 32 | 30 | 51 | 1.1 | 0.6 | 90.4 | 131.1 | 30.5 | 60 | 1600 |
| NUTR 4090 | 1129 | 40 | 90 | 32 | 30 | 51 | 1.1 | 0.6 | 90.4 | 131.1 | 84 | 95 | 1600 |
| NUTR 45 | 883 | 45 | 85 | 32 | 30 | 55 | 1.1 | 0.6 | 95.5 | 144.4 | 31.5 | 61 | 1400 |
| NUTR 45100 | 1396 | 45 | 100 | 32 | 30 | 55 | 1.1 | 0.6 | 95.5 | 144.4 | 106 | 107 | 1400 |
| NUTR 50 | 950 | 50 | 90 | 32 | 30 | 60 | 1.1 | 0.6 | 97.2 | 161.4 | 32 | 62 | 1300 |
| NUTR 50110 | 1690 | 50 | 110 | 32 | 30 | 60 | 1.1 | 0.6 | 97.2 | 161.4 | 120 | 120 | 1300 |
KR… and KRE… series
KRV… and KRVE… series
| Bearing No. | Weight (g) |
Bearing No. | Weight (g) |
Dimensions(mm) | Basic Load Rating(KN) | Limiting Speed | Eccentric Collar | Tightening Torque with Nut | |||||||||||||||
| D | d | C | r | B | B1 | B2 | G | G1 | M | M1 | C1 | d2 | Cr | Cor | (RPM) | d1 | B3 | e | Nm | ||||
| KR 16 | 18 | KRE 16 | 20 | 16 | 6 | 11 | 0.15 | 28 | 16 | – | M6×1 | 8 | 4 | – | 0.6 | 12 | 2.81 | 2.58 | 14000 | 9 | 7 | 0.5 | 3 |
| KRV 16 | 20 | KRVE 16 | 22 | 16 | 6 | 11 | 0.15 | 28 | 16 | – | M6×1 | 8 | 4 | – | 0.6 | 12 | 7.02 | 8.69 | 3800 | 9 | 7 | 0.5 | 3 |
| KR 19 | 28 | KRE 19 | 31 | 19 | 8 | 11 | 0.15 | 32 | 20 | – | M8×1.25 | 10 | 4 | – | 0.6 | 14 | 3.26 | 3.33 | 11000 | 11 | 9 | 0.5 | 8 |
| KRV 19 | 32 | KRVE 19 | 35 | 19 | 8 | 11 | 0.15 | 32 | 20 | – | M8×1.25 | 10 | 4 | – | 0.6 | 14 | 7.94 | 10.75 | 3100 | 11 | 9 | 0.5 | 8 |
| KR 22 | 44 | KRE 22 | 48 | 22 | 10 | 12 | 0.3 | 36 | 23 | – | M10×1 | 12 | 4 | – | 0.6 | 17 | 4.33 | 5.12 | 8000 | 13 | 10 | 0.5 | 15 |
| KRV 22 | 45 | KRVE 22 | 49 | 22 | 10 | 12 | 0.3 | 36 | 23 | – | M10×1 | 12 | 4 | – | 0.6 | 17 | 8.94 | 13.3 | 2600 | 13 | 10 | 0.5 | 15 |
| KR 26 | 58 | KRE 26 | 62 | 26 | 10 | 12 | 0.3 | 36 | 23 | – | M10×1 | 12 | 4 | – | 0.6 | 17 | 4.33 | 5.12 | 8000 | 13 | 10 | 0.5 | 15 |
| KRV 26 | 61 | KRVE 26 | 65 | 26 | 10 | 12 | 0.3 | 36 | 23 | – | M10×1 | 12 | 4 | – | 0.6 | 17 | 8.94 | 13.3 | 2600 | 13 | 10 | 0.5 | 15 |
| KR 30 | 87 | KRE 30 | 93 | 30 | 12 | 14 | 0.6 | 40 | 25 | 6 | M12×1.5 | 13 | 6 | 3 | 0.6 | 23 | 6.97 | 7.06 | 5500 | 15 | 11 | 0.5 | 22 |
| KRV 30 | 89 | KRVE 30 | 95 | 30 | 12 | 14 | 0.6 | 40 | 25 | 6 | M12×1.5 | 13 | 6 | 3 | 0.6 | 23 | 12.6 | 15.3 | 2100 | 15 | 11 | 0.5 | 22 |
| KR 32 | 98 | KRE 32 | 104 | 32 | 12 | 14 | 0.6 | 40 | 25 | 6 | M12×1.5 | 13 | 6 | 3 | 0.6 | 23 | 6.97 | 7.06 | 5500 | 15 | 11 | 0.5 | 22 |
| KRV 32 | 100 | KRVE 32 | 106 | 32 | 12 | 14 | 0.6 | 40 | 25 | 6 | M12×1.5 | 13 | 6 | 3 | 0.6 | 23 | 12.6 | 15.3 | 2100 | 15 | 11 | 0.5 | 22 |
| KR 35 | 169 | KRE 35 | 182 | 35 | 16 | 18 | 0.6 | 52 | 32.5 | 8 | M16×1.5 | 17 | 6 | 3 | 0.8 | 27 | 10.3 | 14.8 | 3600 | 20 | 14 | 1 | 58 |
| KRV 35 | 171 | KRVE 35 | 184 | 35 | 16 | 18 | 0.6 | 52 | 32.5 | 8 | M16×1.5 | 17 | 6 | 3 | 0.8 | 27 | 19.7 | 34.8 | 1600 | 20 | 14 | 1 | 58 |
| KR 40 | 247 | KRE 40 | 263 | 40 | 18 | 20 | 1 | 58 | 36.5 | 8 | M18×1.5 | 19 | 6 | 3 | 0.8 | 32 | 18.2 | 22 | 2900 | 22 | 16 | 1 | 87 |
| KRV 40 | 249 | KRVE 40 | 265 | 40 | 18 | 20 | 1 | 58 | 36.5 | 8 | M18×1.5 | 19 | 6 | 3 | 0.8 | 32 | 31.5 | 45.3 | 1400 | 22 | 16 | 1 | 87 |
| KR 47 | 386 | KRE 47 | 406 | 47 | 20 | 24 | 1 | 66 | 40.5 | 9 | M20×1.5 | 21 | 8 | 4 | 0.8 | 37 | 22.2 | 29.9 | 2400 | 24 | 18 | 1 | 120 |
| KRV 47 | 409 | KRVE 47 | 423 | 47 | 20 | 24 | 1 | 66 | 40.5 | 9 | M20×1.5 | 21 | 8 | 4 | 0.8 | 37 | 37.3 | 59.2 | 1400 | 24 | 18 | 1 | 120 |
| KR 52 | 461 | KRE 52 | 481 | 52 | 20 | 24 | 1 | 66 | 40.5 | 9 | M20×1.5 | 21 | 8 | 4 | 0.8 | 37 | 22.2 | 29.9 | 2400 | 24 | 18 | 1 | 120 |
| KRV 52 | 484 | KRVE 52 | 504 | 52 | 20 | 24 | 1 | 66 | 40.5 | 9 | M20×1.5 | 21 | 8 | 4 | 0.8 | 37 | 37.3 | 59.2 | 1300 | 24 | 18 | 1 | 120 |
| KR 62 | 790 | KRE 62 | 818 | 62 | 24 | 29 | 1 | 80 | 49.5 | 11 | M24×1.5 | 25 | 8 | 4 | 0.8 | 44 | 32.8 | 47.3 | 1900 | 28 | 22 | 1 | 220 |
| KRV 62 | 802 | KRVE 62 | 830 | 62 | 24 | 29 | 1 | 80 | 49.5 | 11 | M24×1.5 | 25 | 8 | 4 | 0.8 | 44 | 53.8 | 91 | 1100 | 28 | 22 | 1 | 220 |
| KR 72 | 1040 | KRE 72 | – | 72 | 24 | 29 | 1.1 | 80 | 49.5 | 11 | M24×1.5 | 25 | 8 | 4 | 0.8 | 44 | 32.8 | 47.3 | 1900 | 28 | 22 | 1 | 220 |
| KRV 72 | 1045 | KRVE 72 | – | 72 | 24 | 29 | 1.1 | 80 | 49.5 | 11 | M24×1.5 | 25 | 8 | 4 | 0.8 | 44 | 53.8 | 91 | 1100 | 28 | 22 | 1 | 220 |
| KR 80 | 1550 | KRE 80 | – | 80 | 30 | 35 | 1.1 | 100 | 63 | 15 | M30×1.5 | 32 | 8 | 4 | 1 | 53 | 48.2 | 83.9 | 1300 | 35 | 29 | 1.5 | 450 |
| KRV 80 | 1561 | KRVE 80 | – | 80 | 30 | 35 | 1.1 | 100 | 63 | 15 | M30×1.5 | 32 | 8 | 4 | 1 | 53 | 74.9 | 150.3 | 850 | 35 | 29 | 1.5 | 450 |
| KR 85 | – | KRE 85 | – | 85 | 30 | 35 | 1.1 | 100 | 63 | 15 | M30×1.5 | 32 | 8 | 4 | 1 | 53 | 48.2 | 83.9 | 1300 | 35 | 29 | 1.5 | 450 |
| KRV 85 | – | KRVE 85 | – | 85 | 30 | 35 | 1.1 | 100 | 63 | 15 | M30×1.5 | 32 | 8 | 4 | 1 | 53 | 74.9 | 150.3 | 850 | 35 | 29 | 1.5 | 450 |
| KR 90 | 1950 | KRE 90 | – | 90 | 30 | 35 | 1.1 | 100 | 63 | 15 | M30×1.5 | 32 | 8 | 4 | 1 | 53 | 48.2 | 83.9 | 1300 | 35 | 29 | 1.5 | 450 |
| KRV 90 | 1970 | KREV 90 | – | 90 | 30 | 35 | 1.1 | 100 | 63 | 15 | M30×1.5 | 32 | 8 | 4 | 1 | 53 | 74.9 | 150.3 | 850 | 35 | 29 | 1.5 | 450 |
NUKR… and NUKRE… series
| Bearing No. | Weight (g) |
Bearing No. | Weight (g) |
Dimensions(mm) | Basic Load Rating(KN) | Limiting Speed | Eccentric Collar | Tightening Torque with Nut | |||||||||||||||||
| D | d | C | r | B | B1 | B2 | G | G1 | M1 | C1 | d2 | A/F | Cr | Cor | Fr perm | For perm | (RPM) | d1 | B3 | e | Nm | ||||
| NUKR 35 | 164 | – | – | 35 | 16 | 18 | 0.6 | 52 | 32.5 | 7.8 | M16×1.5 | 17 | 3 | 0.8 | 20 | 8 | 22.7 | 26.2 | 8.6 | 16.8 | 6500 | 20 | 12 | 1 | 58 |
| – | – | NUKRE 35 | 177 | 35 | 16 | 18 | 0.6 | 52 | 29.5 | 7.8 | M16×1.5 | 17 | 3 | 3.8 | 27 | 8 | 22.7 | 26.2 | 8.6 | 16.8 | 6500 | 20 | 12 | 1 | 58 |
| NUKR 40 | 242 | – | – | 40 | 18 | 20 | 1 | 58 | 36.5 | 8 | M18×1.5 | 19 | 3 | 0.8 | 22 | 8 | 27.7 | 32.4 | 13.1 | 22.6 | 5500 | 22 | 14 | 1 | 87 |
| – | – | NUKRE 40 | 258 | 40 | 18 | 20 | 1 | 58 | 33.5 | 8 | M18×1.5 | 19 | 3 | 3.8 | 30 | 8 | 27.7 | 32.4 | 13.1 | 22.6 | 5500 | 22 | 14 | 1 | 87 |
| NUKR 47 | 380 | NUKRE 47 | 400 | 47 | 20 | 24 | 1 | 66 | 40.5 | 9 | M20×1.5 | 21 | 4 | 0.8 | 27 | 10 | 39.7 | 44 | 16.4 | 33 | 4200 | 24 | 18 | 1 | 120 |
| NUKR 52 | 450 | NUKRE 52 | 470 | 52 | 20 | 24 | 1 | 66 | 40.5 | 9 | M20×1.5 | 21 | 4 | 0.8 | 31 | 10 | 44.7 | 55.2 | 17.3 | 34.5 | 3400 | 24 | 18 | 1 | 120 |
| NUKR 62 | 795 | NUKRE 62 | 824 | 62 | 24 | 28 | 1 | 80 | 49.5 | 11 | M24×1.5 | 25 | 4 | 1.3 | 38 | 14 | 63.7 | 89.7 | 23.5 | 46.5 | 2600 | 28 | 22 | 1 | 220 |
| NUKR 72 | 1571 | NUKRE 72 | 1050 | 72 | 24 | 28 | 1.1 | 80 | 49.5 | 11 | M24×1.5 | 25 | 4 | 1.3 | 44 | 14 | 74.1 | 104.6 | 32 | 60 | 2100 | 28 | 22 | 1 | 220 |
| NUKR 80 | 1600 | NUKRE 80 | 1670 | 80 | 30 | 35 | 1.1 | 100 | 63 | 15 | M30×1.5 | 32 | 4 | 1 | 47 | 14 | 107 | 141.4 | 47.5 | 96 | 1800 | 35 | 29 | 1.5 | 450 |
| NUKR 85 | 1790 | NUKRE 85 | 1860 | 85 | 30 | 35 | 1.1 | 100 | 63 | 15 | M30×1.5 | 32 | 4 | 1 | 47 | 14 | 107 | 141.4 | – | – | 1800 | 35 | 29 | 1.5 | 450 |
| NUKR 90 | 1960 | NUKRE 90 | 2571 | 90 | 30 | 35 | 1.1 | 100 | 63 | 15 | M30×1.5 | 32 | 4 | 1 | 47 | 14 | 107 | 141.4 | 77 | 117 | 1800 | 35 | 29 | 1.5 | 450 |
NAST…ZZ series
| Bearing No. | Weight (g) |
Dimensions(mm) | Basic Load Rating(KN) | Limiting Speed | ||||||||
| d | D | B | C | d1 | a | e | r | Cr | Cor | (RPM) | ||
| NAST 6ZZ | 24.5 | 6 | 19 | 14 | 13.8 | 14 | 2.5 | 0.8 | 0.5 | 4.1 | 4.5 | 17000 |
| NAST 8ZZ | 39 | 8 | 24 | 14 | 13.8 | 17.5 | 2.5 | 0.8 | 1 | 5.7 | 5.9 | 14000 |
| NAST 10ZZ | 65 | 10 | 30 | 16 | 15.8 | 23.5 | 2.5 | 0.8 | 1.5 | 9.48 | 9.32 | 12000 |
| NAST 12ZZ | 75 | 12 | 32 | 16 | 15.8 | 25.5 | 2.5 | 0.8 | 1.5 | 10 | 10.4 | 11000 |
| NAST 15ZZ | 83 | 15 | 35 | 16 | 15.8 | 29 | 2.5 | 0.8 | 1.5 | 11.7 | 13.4 | 8500 |
| NAST 17ZZ | 136 | 17 | 40 | 20 | 19.8 | 32.5 | 3 | 1 | 1.5 | 19.2 | 23.5 | 7500 |
| NAST 20ZZ | 195 | 20 | 47 | 20 | 19.8 | 38 | 3 | 1 | 1.5 | 20.8 | 27 | 7000 |
| NAST 25ZZ | 226 | 25 | 52 | 20 | 19.8 | 43 | 3 | 1 | 1.5 | 23 | 32.5 | 5500 |
| NAST 30ZZ | 402 | 30 | 62 | 25 | 24.8 | 50.5 | 4 | 1.2 | 1.5 | 35.3 | 55.3 | 4500 |
| NAST 35ZZ | 550 | 35 | 72 | 25 | 24.8 | 53.5 | 4 | 1.2 | 1.5 | 36 | 58.3 | 4000 |
| NAST 40ZZ | 710 | 40 | 80 | 26 | 25.8 | 61.5 | 4 | 1.2 | 2 | 37.3 | 64.3 | 3500 |
| NAST 45ZZ | 760 | 45 | 85 | 26 | 25.8 | 66.5 | 4 | 1.2 | 2 | 37.3 | 66.3 | 3000 |
| NAST 50ZZ | 830 | 50 | 90 | 26 | 25.8 | 76 | 4 | 1.2 | 2 | 38.9 | 71.6 | 3000 |
PWTR…2RS series
| Bearing No. | Weight (g) |
Dimensions(mm) | Basic Load Rating(KN) | Limiting Speed | |||||||||
| d | D | B | C | d1 | r | r1 | Cr | Cor | Fr perm | For perm | (RPM) | ||
| PWTR 15.2RS | 99 | 15 | 35 | 19 | 18 | 20 | 0.6 | 0.3 | 17.2 | 18.3 | 9.4 | 11.3 | 6000 |
| PWTR 1542.2RS | 158 | 15 | 42 | 19 | 18 | 20 | 0.6 | 0.3 | 17.2 | 18.3 | 14.1 | 14.1 | 6000 |
| PWTR 17.2RS | 147 | 17 | 40 | 21 | 21 | 22 | 1 | 0.5 | 19.4 | 20.8 | 13.8 | 13.8 | 5000 |
| PWTR 1747.2RS | 220 | 17 | 47 | 21 | 21 | 22 | 1 | 0.5 | 19.4 | 20.8 | 16.4 | 16.4 | 5000 |
| PWTR 20.2RS | 245 | 20 | 47 | 25 | 24 | 27 | 1 | 0.5 | 30.6 | 33.6 | 18.3 | 25.5 | 3800 |
| PWTR 2052.2RS | 321 | 20 | 52 | 25 | 24 | 27 | 1 | 0.5 | 30.6 | 33.6 | 29.5 | 29.5 | 3800 |
| PWTR 25.2RS | 281 | 25 | 52 | 25 | 24 | 31 | 1 | 0.5 | 34.4 | 40.8 | 19.3 | 28 | 3800 |
| PWTR 2562.2RS | 450 | 25 | 62 | 25 | 24 | 31 | 1 | 0.5 | 34.4 | 40.8 | 36 | 36 | 3800 |
| PWTR 30.2RS | 465 | 30 | 62 | 29 | 28 | 38 | 1 | 0.5 | 52.4 | 69.8 | 25.5 | 39.5 | 2200 |
| PWTR 3072.2RS | 697 | 30 | 72 | 29 | 28 | 38 | 1 | 0.5 | 52.4 | 69.8 | 49 | 49 | 2200 |
| PWTR 35.2RS | 630 | 35 | 72 | 29 | 28 | 44 | 1.1 | 0.6 | 61.8 | 81.4 | 34.5 | 46.5 | 1800 |
| PWTR 3580.2RS | 838 | 35 | 80 | 29 | 28 | 44 | 1.1 | 0.6 | 61.8 | 81.4 | 55 | 55 | 1800 |
| PWTR 40.2RS | 816 | 40 | 80 | 32 | 30 | 51 | 1.1 | 0.6 | 76 | 104.9 | 35 | 53 | 1500 |
| PWTR 4090.2RS | 1129 | 40 | 90 | 32 | 30 | 51 | 1.1 | 0.6 | 76 | 104.9 | 66 | 66 | 1500 |
| PWTR 45.2RS | 883 | 45 | 85 | 32 | 30 | 55 | 1.1 | 0.6 | 80.3 | 115.5 | 36 | 55 | 1300 |
| PWTR 45100.2RS | 1396 | 45 | 100 | 32 | 30 | 55 | 1.1 | 0.6 | 80.3 | 115.5 | 74 | 74 | 1300 |
| PWTR 50.2RS | 950 | 50 | 90 | 32 | 30 | 60 | 1.1 | 0.6 | 81.7 | 129 | 37 | 57 | 1100 |
| PWTR 50110.2RS | 1690 | 50 | 110 | 32 | 30 | 60 | 1.1 | 0.6 | 81.7 | 129 | 82 | 82 | 1100 |
KR52…NUUP series
| Bearing No. | Weight (g) |
Dimensions(mm) | Basic Load Rating(KN) | Limiting Speed | ||||||||||||
| D | d | B | B1 | B2 | C | C1 | d1 | r | G | G1 | A/F | Cr | Cor | (RPM) | ||
| KR 5201 NUUP | 120 | 35 | 12 | 49.2 | 17 | 32.5 | 15.9 | 0.8 | 17.1 | 0.6 | M12×1.5 | 17 | 6 | 8.6 | 5.1 | 6000 |
| KR 5202 NUUP | 190 | 40 | 16 | 53.2 | 17 | 36.5 | 15.9 | 0.8 | 20 | 0.6 | M16×1.5 | 19 | 8 | 9.8 | 6.2 | 6000 |
| KR 5203 NUUP | 290 | 47 | 18 | 58.8 | 18.5 | 40.5 | 17.5 | 0.8 | 22.9 | 0.6 | M18×1.5 | 21 | 8 | 12.6 | 8.2 | 3800 |
| KR 5204 NUUP | 380 | 52 | 20 | 63.6 | 22.5 | 41.5 | 20.6 | 1.5 | 26.8 | 1 | M20×1.5 | 21 | 10 | 15.8 | 10.5 | 3800 |
| KR 5205 NUUP | 580 | 62 | 24 | 70.9 | 21.5 | 49.5 | 20.6 | 0.8 | 30.3 | 1 | M24×1.5 | 25 | 10 | 18.5 | 13 | 2200 |
| KR 5206 NUUP | 800 | 72 | 24 | 74.1 | 25 | 49.5 | 23.8 | 0.8 | 37.3 | 1 | M24×1.5 | 25 | 10 | 24.6 | 17.7 | 2200 |
| KR 5207 NUUP | 1200 | 80 | 30 | 91 | 28 | 63 | 27 | 1 | 42.4 | 1.1 | M30×1.5 | 32 | 12 | 30.5 | 22.4 | 1800 |
PWKR…2RS series
| Bearing No. | Weight (g) |
Bearing No. | Weight (g) |
Dimensions(mm) | Basic Load Rating(KN) | Limiting Speed | Eccentric Collar | Tightening Torque with Nut | |||||||||||||||||
| D | d | C | r | B | B1 | B2 | G | G1 | M1 | C1 | d2 | A/F | Cr | Cor | Fr pem | For pem | (RPM) | d1 | B3 | e | Nm | ||||
| PWKR35.2RS | 164 | – | – | 35 | 16 | 18 | 0.6 | 52 | 32.5 | 7.8 | M16×1.5 | 17 | 3 | 0.8 | 20 | 8 | 17.2 | 18.3 | 9.4 | 11.3 | 6000 | 20 | 12 | 1 | 58 |
| – | – | PWKRE35.2RS | 177 | 35 | 16 | 18 | 0.6 | 52 | 32.5 | – | M16×1.5 | 17 | – | 0.8 | 20 | 8 | 17.2 | 18.3 | 9.4 | 11.3 | 6000 | 20 | 12 | 1 | 58 |
| PWKR40.2RS | 242 | – | – | 40 | 18 | 20 | 1 | 58 | 36.5 | 8 | M18×1.5 | 19 | 3 | 0.8 | 22 | 8 | 19.4 | 20.8 | 13.8 | 13.8 | 5000 | 22 | 14 | 1 | 87 |
| – | – | PWKRE40.2RS | 258 | 40 | 18 | 20 | 1 | 58 | 36.5 | – | M18×1.5 | 19 | – | 0.8 | 22 | 8 | 19.4 | 20.8 | 13.8 | 13.8 | 5000 | 22 | 14 | 1 | 87 |
| PWKR47.2RS | 380 | PWKRE47.2RS | 400 | 47 | 20 | 24 | 1 | 66 | 40.5 | 9 | M20×1.5 | 21 | 4 | 0.8 | 27 | 10 | 30.6 | 33.6 | 19.3 | 25.5 | 3800 | 24 | 18 | 1 | 120 |
| PWKR52.2RS | 450 | PWKRE52.2RS | 470 | 52 | 20 | 24 | 1 | 66 | 40.5 | 9 | M20×1.5 | 21 | 4 | 0.8 | 31 | 10 | 34.4 | 40.8 | 19.3 | 28 | 3800 | 24 | 18 | 1 | 120 |
| PWKR62.2RS | 795 | PWKRE62.2RS | 824 | 62 | 24 | 28 | 1 | 80 | 49.5 | 11 | M24×1.5 | 25 | 4 | 1.3 | 38 | 14 | 52.4 | 69.8 | 25.5 | 39.5 | 2200 | 28 | 22 | 1 | 220 |
| PWKR72.2RS | 1571 | PWKRE72.2RS | 1050 | 72 | 24 | 28 | 1.1 | 80 | 49.5 | 11 | M24×1.5 | 25 | 4 | 1.3 | 44 | 14 | 61.8 | 81.4 | 46.5 | 46.5 | 2200 | 28 | 22 | 1 | 220 |
| PWKR80.2RS | 1600 | PWKRE80.2RS | 1670 | 80 | 30 | 35 | 1.1 | 100 | 63 | 15 | M30×1.5 | 32 | 4 | 1 | 47 | 14 | 93.9 | 118.9 | 53 | 70 | 1800 | 35 | 29 | 1.5 | 450 |
| PWKR85.2RS | 1780 | PWKRE85.2RS | 1850 | 85 | 30 | 35 | 1.1 | 100 | 63 | 15 | M30×1.5 | 32 | 4 | 1 | 47 | 14 | 93.9 | 118.9 | 53 | 70 | 1800 | 35 | 29 | 1.5 | 450 |
| PWKR90.2RS | 1960 | PWKRE90.2RS | 2571 | 90 | 30 | 35 | 1.1 | 100 | 63 | 15 | M30×1.5 | 32 | 4 | 1 | 47 | 14 | 93.9 | 118.9 | 82 | 82 | 1800 | 35 | 29 | 1.5 | 450 |
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Can track bearings be customized or modified for specific track or linear motion applications?
Yes, track bearings can be customized or modified to meet specific requirements of track or linear motion applications. Manufacturers often offer a range of options and capabilities to tailor track bearings to the unique needs of different industries and applications. Here are some ways in which track bearings can be customized or modified:
- Size and Dimensional Variations: Track bearings can be customized in terms of size, diameter, width, and overall dimensions to fit specific track or linear motion systems. Manufacturers can provide bearings with varying sizes and load capacities to accommodate different application requirements.
- Material Selection: Track bearings can be manufactured from various materials depending on the specific application’s demands. Common materials include steel, stainless steel, ceramic, and polymer composites. Material selection can be customized to achieve desired properties such as corrosion resistance, high temperature tolerance, or low friction.
- Sealing and Protection: In applications where track bearings are exposed to contaminants, moisture, or harsh environments, customized sealing and protection features can be added. These may include additional seals, shields, or coatings to enhance the bearing’s resistance to dust, water, chemicals, or extreme temperatures.
- Lubrication Options: While self-lubricating or maintenance-free track bearings offer convenience, applications with specific lubrication requirements may benefit from customized lubrication options. Manufacturers can modify the bearing design to accommodate external lubrication systems or provide alternative lubrication methods to meet the unique demands of the application.
- Specialized Load and Speed Ratings: In certain applications, track bearings may need to handle exceptionally high loads or operate at high speeds. Manufacturers can customize the bearing design to offer specialized load and speed ratings to ensure optimal performance and reliability in such demanding conditions.
- Mounting and Attachment Options: Track bearings can be customized with different mounting and attachment options to facilitate easy installation and integration into specific track or linear motion systems. This may include variations in bolt hole patterns, flange designs, or specialized mounting arrangements.
- Track Geometry Compatibility: Track bearings can be designed or modified to match specific track or guide rail geometries. This ensures proper fit, alignment, and smooth operation along the designated track, minimizing the risk of misalignment or issues related to track compatibility.
It is important to work closely with bearing manufacturers or suppliers to discuss the specific requirements of the track or linear motion application. By collaborating with experts, it is possible to customize or modify track bearings to optimize performance, reliability, and longevity in a wide range of applications.

Are there potential challenges or limitations in using track bearings in specific industries?
While track bearings are widely used in various industries for their ability to support linear motion and handle heavy loads, there can be potential challenges and limitations associated with their use in specific industries. Here’s a detailed explanation:
1. Contamination and Harsh Environments:
Industries such as mining, construction, and agriculture often operate in harsh environments with high levels of contamination, including dust, dirt, and moisture. These contaminants can enter the track bearings and cause accelerated wear, reduced performance, and potential failure. Regular maintenance and appropriate sealing measures are required to mitigate these challenges.
2. High-Temperature Environments:
In industries like metal processing, glass manufacturing, and foundries, track bearings may be exposed to high temperatures. Excessive heat can affect the lubrication properties and structural integrity of bearings, leading to premature failure. Selecting track bearings specifically designed for high-temperature applications and using suitable lubricants are necessary to overcome this limitation.
3. Corrosive Chemicals:
Industries such as chemical processing, food and beverage, and wastewater treatment involve exposure to corrosive chemicals. Corrosion can significantly affect the performance and lifespan of track bearings. Choosing bearings made from corrosion-resistant materials or applying protective coatings can help address this challenge.
4. Heavy Load and Impact:
Industries like material handling, mining, and construction often require track bearings to withstand heavy loads and frequent impacts. Excessive load or impact can lead to premature wear, deformation, or even catastrophic failure of the bearings. Selecting track bearings with appropriate load capacities and impact resistance is crucial in these industries.
5. Precision and Accuracy:
In industries such as robotics, semiconductor manufacturing, and precision machining, track bearings may need to meet stringent requirements for precision and accuracy. Any deviation or play in the bearings can impact the overall performance and quality of the process. Using high-precision track bearings and ensuring proper alignment and installation are essential in these cases.
6. Speed and Acceleration:
Applications involving high-speed or rapid acceleration, such as automated assembly lines or conveyor systems, can impose additional challenges on track bearings. Excessive speed or acceleration can generate heat and vibration, leading to increased wear and reduced bearing life. Choosing track bearings with suitable speed and acceleration ratings is vital in these industries.
It is important to consult with bearing manufacturers or industry experts to identify and address any potential challenges or limitations specific to the industry and application at hand. By understanding these challenges and selecting track bearings designed to overcome them, industries can optimize performance, reliability, and longevity while mitigating risks and ensuring smooth operation.

What are track bearings, and how are they used in various applications?
Track bearings, also known as track rollers or track follower bearings, are specialized rolling bearings designed to operate in track-based systems. They are used in various applications that require guided linear or rotational motion. Let’s explore in detail the characteristics of track bearings and their common applications:
- Design and Construction: Track bearings typically consist of an outer ring, an inner ring, a set of rolling elements (such as rollers or needles), and a cage that holds the rolling elements together. The outer ring features a track or guide surface, while the inner ring is mounted on a shaft or stud. The rolling elements facilitate smooth rolling motion along the track, allowing for linear or rotational movement.
- Guided Motion: Track bearings are primarily used to provide guided motion in applications where components need to move along a defined path or track. The outer ring’s track surface interfaces with the track or guide rail, ensuring precise and controlled motion. This guided motion is crucial in various applications such as material handling systems, conveyors, cam mechanisms, and automated machinery.
- Load Support: Track bearings are designed to support and distribute loads, both radial and axial, in track-based systems. They can handle substantial loads while maintaining smooth motion and minimizing friction. The load-carrying capacity of track bearings makes them suitable for applications involving heavy loads, such as construction equipment, agricultural machinery, and industrial automation systems.
- Multiple Types: Track bearings come in various types to suit different application requirements. Some common types include yoke type track rollers, stud type track rollers, and cam followers. Yoke type track rollers have thick outer rings and can withstand high radial loads. Stud type track rollers have a stud instead of an inner ring and are suitable for applications with limited space. Cam followers have a stud with a built-in roller and are commonly used in cam-driven systems.
- Sealing and Contamination Protection: In many applications, track bearings are exposed to harsh environments and contaminants. To ensure reliable operation, track bearings often incorporate sealing arrangements or protective coatings. These features help prevent the ingress of dust, dirt, moisture, or other contaminants, prolonging the bearing’s service life and reducing the risk of premature failure.
- Various Applications: Track bearings find applications in a wide range of industries and systems. Some common applications include:
- Material Handling Systems: Track bearings are used in conveyors, roller tracks, and overhead cranes to facilitate smooth and guided movement of materials.
- Automated Machinery: Track bearings are employed in automated machines and robotic systems for precise motion control and positioning.
- Cam Mechanisms: Track bearings are utilized in cam-driven systems, where they follow the profile of the cam and translate the rotary motion into linear or oscillating motion.
- Construction Equipment: Track bearings are found in construction machinery, such as excavators, bulldozers, and compactors, to support the tracks or guide wheels.
- Agricultural Machinery: Track bearings are used in agricultural equipment, including tractors, combines, and harvesters, to support the tracks or guide wheels and provide reliable movement.
- Printing and Packaging Machinery: Track bearings are employed in printing presses, packaging machines, and labeling systems to ensure precise and guided movement of the printing heads, packaging materials, or labels.
In summary, track bearings are specialized rolling bearings designed for guided linear or rotational motion along a track or guide rail. They provide precise motion control, support substantial loads, and find applications in various industries such as material handling, automation, construction, agriculture, printing, and packaging. With their ability to facilitate guided motion and handle significant loads, track bearings contribute to the smooth and reliable operation of track-based systems in a wide range of applications.


editor by CX 2024-04-30