BMT Bearings' Yoke Type Track Rollers combines rolling and load-bearing into one component. Unlike ordinary bearings, these rollers are fitted onto a pin with the outer ring directly contacting the track and taking the full load. The thick outer ring prevents deformation under repeated rolling pressure. Its cylindrical outer shape also handles slight mounting misalignment, spreading the load evenly and preventing concentrated stress at the edges, delivering smooth motion.
The outer ring is substantially thicker than that of standard bearings that can handle the high contact pressure of track rolling and the yoke-mount design distributes radial loads evenly, able to maintain rigidity over extended operation.
Enhanced materials of high-carbon chromium and outer design of crowned outer ring significantly extend both roller and track life.
Pre-lubricated already, these rollers run maintenance‑free and relubrication can be done through the inner ring’s lubrication hole without disassembly. Sealed versions keep out dust and moisture, reducing service frequency.
Yoke Type Track Rollers is ready to use immediately, simplifying the installation process. We offer various design variations such as single or double rows, with or without inner rings, sealed or open types, to suit different application scenarios.

1. GCr15 bearing steel: Standard choice, excellent wear and fatigue resistance for most industrial applications.
2. Carbon steel: Economical alternative where cost is a priority; for lighter loads.
3. Stainless steel: For corrosive or humid environments like food processing, outdoor and marine, retains adequate hardness while resisting rust.
BMT Bearings controls every step from raw material to finished roller:
Raw material inspection: Chemical composition and internal defects checked for each batch.
Forging / CNC turning: Basic shape formed by forging, then rough-machined to dimensional accuracy.
Heat treatment: Controlled quenching and tempering to achieve 58–62 HRC with minimal distortion.
Precision grinding: Automatic grinding lines finish raceways and diameters to tight tolerances.
Assembly: Rolling elements, cage, rings, and seals are assembled on automated lines for consistency.
Noise and clearance inspection: Every piece is tested for running noise and radial play; rejects are removed.
Anti‑rust treatment: Cleaned and coated with rust-preventive oil.
Final packaging inspection: Appearance, labelling, and packaging integrity checked before shipment.
Consider these factors when choosing the right model:
Dimensions: Bore (pin diameter), outside diameter, and width based on load and space.
Load : Figure out the actual load each roller will carry, then check it against the values listed in the product tables for running and stationary condition.
Speed: Confirm the roller’s maximum allowable rotation speed for the application. Refer to the product data for the exact RPM limits for each model.
Track profile: Ensure the track shape like flat, V‑groove, etc. matches the outer ring profile like cylindrical or crowned.
Environment: Consider dust, moisture, and chemicals to choose sealing and material.
|
Feature |
Yoke Type |
Stud Type |
|
Mounting |
On a pin, supported at both ends |
Selfcontained stud, cantilevered |
|
Load capacity |
Higher: for heavy loads and high speeds |
Moderate: for lighter loads |
|
Rigidity |
High |
Lower |
|
Typical use |
Heavy machinery, cam mechanisms, conveyors |
Compact light-duty equipment |
|
Flexibility |
Various inner ring, sealing, and guidance options |
Usually a fixed unit |
1. Cam mechanisms and guide rails
2. Conveyors and linear guidance systems
3. Packaging, textile, and printing machinery
4. Automated assembly lines
5. Heavy industrial equipment (metallurgy, mining, construction)
|
Category |
Options |
|
Outer ring profile |
Crowned / Cylindrical |
|
Inner ring |
With inner ring / Without (needs hardened pin) |
|
Sealing |
Open / Sealed |
|
Rolling elements |
Needle rollers / Cylindrical rollers |
|
Cage material |
Stamped steel / Plastic / Fullcomplement |
|
Category |
Options |
|
Dimensions |
Nonstandard bore, OD, width |
|
Coatings |
Black oxide, phosphating, zinc plating, corrosionresistant layers |
|
Branding & packaging |
Logo on roller face, customised packaging |
|
Seal/cage modification |
Alternative materials or lip designs |
A standard bearing supports a rotating shaft inside a housing; a Yoke Type Track Roller has its outer ring directly contacting the track and bearing the load, hence the thicker ring and often a crowned profile to handle misalignment.
Choose crowned if misalignment is possible; choose cylindrical when alignment is precise and maximum contact area is needed.
Yes, slightly, due to seal friction. Check the product tables for specific RPM limits.
Yes. We offer non-standard dimensions, special surface treatments, custom branding, and modified sealing/cage materials; contact us to further discuss OEM details.
For standard or customised Yoke Type Track Rollers, reach out to us for selection assistance and pricing. We will recommend the right model based on your specific conditions.
Request a quote or technical consultation now!
ADD:No.183, Longfeng, West of Zhangting industrial Zone, Yuyao, Ningbo, China
TEL:+86-574-87627892
MOB:+86-15990260649
E-MAIL:info@demy-bearing.com
| Yoke Type Track Rollers: LR serise | ||||||
| Dimensions(mm) | Basic load ratings | |||||
| Designation | D | d | C | rmin. | dyn. Cr w KN | stat. Cor w KN |
| LR50/5 NPPU | 17 | 5 | 7 | 0.2 | 1.69 | 0.94 |
| LR50/6 NPPU | 19 | 6 | 9 | 0.3 | 2.7 | 1.37 |
| LR50/7 NPPU | 22 | 7 | 10 | 0.3 | 3.3 | 1.7 |
| LR50/8 NPPU | 24 | 8 | 11 | 0.3 | 4.3 | 2.39 |
| LR5000 KDD | 28 | 10 | 12 | 0.3 | 4.75 | 2.85 |
| LR5000 KDDU | 28 | 10 | 12 | 0.3 | 4.75 | 2.85 |
| LR5000 NPP | 28 | 10 | 12 | 0.3 | 4.75 | 2.85 |
| LR5000 NPPU | 28 | 10 | 12 | 0.3 | 4.75 | 2.85 |
| LR5001 KDD | 30 | 12 | 12 | 0.3 | 5.1 | 3.1 |
| LR5001 KDDU | 30 | 12 | 12 | 0.3 | 5.1 | 3.1 |
| LR5001 NPP | 30 | 12 | 12 | 0.3 | 5.1 | 3.1 |
| LR5001 NPPU | 30 | 12 | 12 | 0.3 | 5.1 | 3.1 |
| LR5200 KDD | 32 | 10 | 14 | 0.6 | 6.8 | 4.1 |
| LR5200 KDDU | 32 | 10 | 14 | 0.6 | 6.8 | 4.1 |
| LR5200 NPP | 32 | 10 | 14 | 0.6 | 6.8 | 4.1 |
| LR5200 NPPU | 32 | 10 | 14 | 0.6 | 6.8 | 4.1 |
| LR5002 KDD | 35 | 15 | 13 | 0.3 | 6.5 | 4.15 |
| LR5002 KDDU | 35 | 15 | 13 | 0.3 | 6.5 | 4.15 |
| LR5002 NPP | 35 | 15 | 13 | 0.3 | 6.5 | 4.15 |
| LR5002 NPPU | 35 | 15 | 13 | 0.3 | 6.5 | 4.15 |
| LR5201 KDD | 35 | 12 | 15.9 | 0.6 | 8.7 | 5.2 |
| LR5201 KDDU | 35 | 12 | 15.9 | 0.6 | 8.7 | 5.2 |
| LR5201 NPP | 35 | 12 | 15.9 | 0.6 | 8.7 | 5.2 |
| LR5201 NPPU | 35 | 12 | 15.9 | 0.6 | 8.7 | 5.2 |
| LR5003 KDD | 40 | 17 | 14 | 0.3 | 7.8 | 5.3 |
| LR5003 KDDU | 40 | 17 | 14 | 0.3 | 7.8 | 5.3 |
| LR5003 NPP | 40 | 17 | 14 | 0.3 | 7.8 | 5.3 |
| LR5003 NPPU | 40 | 17 | 14 | 0.3 | 7.8 | 5.3 |
| LR5202 KDD | 40 | 15 | 15.9 | 0.6 | 10 | 6.3 |
| LR5202 KDDU | 40 | 15 | 15.9 | 0.6 | 10 | 6.3 |
| LR5202 NPP | 40 | 15 | 15.9 | 0.6 | 10 | 6.3 |
| LR5202 NPPU | 40 | 15 | 15.9 | 0.6 | 10 | 6.3 |
| LR5004 KDD | 47 | 20 | 16 | 0.6 | 11.7 | 7.7 |
| LR5004 KDDU | 47 | 20 | 16 | 0.6 | 11.7 | 7.7 |
| LR5004 NPPD | 47 | 20 | 16 | 0.6 | 11.7 | 7.7 |
| LR5004 NPPU | 47 | 20 | 16 | 0.6 | 11.7 | 7.7 |
| LR5203 KDD | 47 | 17 | 17.5 | 0.6 | 12.8 | 8.4 |
| LR5203 KDDU | 47 | 17 | 17.5 | 0.6 | 12.8 | 8.4 |
| LR5203 NPP | 47 | 17 | 17.5 | 0.6 | 12.8 | 8.4 |
| LR5203 NPPU | 47 | 17 | 17.5 | 0.6 | 12.8 | 8.4 |
| LR5005 KDD | 52 | 25 | 16 | 0.6 | 11.8 | 8.2 |
| LR5005 KDDU | 52 | 25 | 16 | 0.6 | 11.8 | 8.2 |
| LR5005 NPP | 52 | 25 | 16 | 0.6 | 11.8 | 8.2 |
| LR5005 NPPU | 52 | 25 | 16 | 0.6 | 11.8 | 8.2 |
| LR5204 KDD | 52 | 20 | 20.6 | 1 | 16.1 | 10.7 |
| LR5204 KDDU | 52 | 20 | 20.6 | 1 | 16.1 | 10.7 |
| LR5204 NPP | 52 | 20 | 20.6 | 1 | 16.1 | 10.7 |
| LR5204 NPPU | 52 | 20 | 20.6 | 1 | 16.1 | 10.7 |
| LR5303 KDD | 52 | 17 | 22.2 | 1 | 17.5 | 11.3 |
| LR5303 KDDU | 52 | 17 | 22.2 | 1 | 17.5 | 11.3 |
| LR5303 NPP | 52 | 17 | 22.2 | 1 | 17.5 | 11.3 |
| LR5303 NPPU | 52 | 17 | 22.2 | 1 | 17.5 | 11.3 |
| LR5006 KDD | 62 | 30 | 19 | 1 | 16.1 | 11.9 |
| LR5006 KDDU | 62 | 30 | 19 | 1 | 16.1 | 11.9 |
| LR5006 NPP | 62 | 30 | 19 | 1 | 16.1 | 11.9 |
| LR5006 NPPU | 62 | 30 | 19 | 1 | 16.1 | 11.9 |
| LR5205 KDD | 62 | 25 | 20.6 | 1 | 18.8 | 13.2 |
| LR5205 KDDU | 62 | 25 | 20.6 | 1 | 18.8 | 13.2 |
| LR5205 NPP | 62 | 25 | 20.6 | 1 | 18.8 | 13.2 |
| LR5205 NPPU | 62 | 25 | 20.6 | 1 | 18.8 | 13.2 |
| LR5304 KDD | 62 | 20 | 22.2 | 1.1 | 21.5 | 14.8 |
| LR5304 KDDU | 62 | 20 | 22.2 | 1.1 | 21.5 | 14.8 |
| LR5304 NPP | 62 | 20 | 22.2 | 1.1 | 21.5 | 14.8 |
| LR5304 NPPU | 62 | 20 | 22.2 | 1.1 | 21.5 | 14.8 |
| LR5007 KDD | 68 | 35 | 20 | 1 | 17.8 | 13.3 |
| LR5007 KDDU | 68 | 35 | 20 | 1 | 17.8 | 13.3 |
| LR5007 NPP | 68 | 35 | 20 | 1 | 17.8 | 13.3 |
| LR5007 NPPU | 68 | 35 | 20 | 1 | 17.8 | 13.3 |
| LR5206 KDD | 72 | 30 | 23.8 | 1 | 25 | 18 |
| LR5206 KDDU | 72 | 30 | 23.8 | 1 | 25 | 18 |
| LR5206 NPP | 72 | 30 | 23.8 | 1 | 25 | 18 |
| LR5206 NPPU | 72 | 30 | 23.8 | 1 | 25 | 18 |
| LR5305 KDD | 72 | 25 | 25.4 | 1.1 | 28 | 19.9 |
| LR5305 KDDU | 72 | 25 | 25.4 | 1.1 | 28 | 19.9 |
| LR5305 NPP | 72 | 25 | 25.4 | 1.1 | 28 | 19.9 |
| LR5305 NPPU | 72 | 25 | 25.4 | 1.1 | 28 | 19.9 |
| LR5207 KDD | 80 | 35 | 27 | 1.1 | 31 | 22.8 |
| LR5207 KDDU | 80 | 35 | 27 | 1.1 | 31 | 22.8 |
| LR5207 NPP | 80 | 35 | 27 | 1.1 | 31 | 22.8 |
| LR5207 NPPU | 80 | 35 | 27 | 1.1 | 31 | 22.8 |
| LR5306 KDD | 80 | 30 | 30.2 | 1.1 | 35.5 | 25.5 |
| LR5306 KDDU | 80 | 30 | 30.2 | 1.1 | 35.5 | 25.5 |
| LR5306 NPP | 80 | 30 | 30.2 | 1.1 | 35.5 | 25.5 |
| LR5306 NPPU | 80 | 30 | 30.2 | 1.1 | 35.5 | 25.5 |
| LR5208 KDD | 85 | 40 | 30.2 | 1.1 | 35 | 26 |
| LR5208 KDDU | 85 | 40 | 30.2 | 1.1 | 35 | 26 |
| LR5208 NPP | 85 | 40 | 30.2 | 1.1 | 35 | 26 |
| LR5208 NPPU | 85 | 40 | 30.2 | 1.1 | 35 | 26 |
| LR5307 KDD | 90 | 35 | 34.9 | 1.5 | 44 | 32.5 |
| LR5307 KDDU | 90 | 35 | 34.9 | 1.5 | 44 | 32.5 |
| LR5307 NPP | 90 | 35 | 34.9 | 1.5 | 44 | 32.5 |
| LR5307 NPPU | 90 | 35 | 34.9 | 1.5 | 44 | 32.5 |
| LR5308 KDD | 100 | 40 | 36.5 | 1.5 | 54 | 40.5 |
| LR5308 KDDU | 100 | 40 | 36.5 | 1.5 | 54 | 40.5 |
| LR5308 NPP | 100 | 40 | 36.5 | 1.5 | 54 | 40.5 |
| LR5308 NPPU | 100 | 40 | 36.5 | 1.5 | 54 | 40.5 |
| Yoke Type Track Rollers: | |||||
| NATV, NATR | |||||
| Size (mm) | |||||
| model | d | d2 | D | B | C |
| NATV 5 PP | 5 | 12 | 16 | 12 | 11 |
| NATR 5 PP | 5 | 12 | 16 | 12 | 11 |
| NATV 6 PP | 6 | 14 | 19 | 12 | 11 |
| NATR 6 PP | 6 | 14 | 19 | 12 | 11 |
| NATV 8 PP | 8 | 19 | 24 | 15 | 14 |
| NATR 8 PP | 8 | 19 | 24 | 15 | 14 |
| NATV 10 PP | 10 | 23 | 30 | 15 | 14 |
| NATR 10 PP | 10 | 23 | 30 | 15 | 14 |
| NATV 12 PP | 12 | 25 | 32 | 15 | 14 |
| NATR 12 PP | 12 | 25 | 32 | 15 | 14 |
| NATV 15 PP | 15 | 27 | 35 | 19 | 18 |
| NATR 15 PP | 15 | 27 | 35 | 19 | 18 |
| NATV 17 PP | 17 | 32 | 40 | 21 | 20 |
| NATR 17 PP | 17 | 32 | 40 | 21 | 20 |
| NATV 20 PP | 20 | 37 | 47 | 25 | 24 |
| NATR 20 PP | 20 | 37 | 47 | 25 | 24 |
| NATV 25 PP | 25 | 42 | 52 | 25 | 24 |
| NATR 25 PP | 25 | 42 | 52 | 25 | 24 |
| NATV 30 PP | 30 | 51 | 62 | 29 | 28 |
| NATR 30 PP | 30 | 51 | 62 | 29 | 28 |
| NATV 35 PP | 35 | 58 | 72 | 29 | 28 |
| NATR 35 PP | 35 | 58 | 72 | 29 | 28 |
| NATV 40 PP | 40 | 66 | 80 | 32 | 30 |
| NATR 40 PP | 40 | 66 | 80 | 32 | 30 |
| NATV 45 PP | 45 | 72 | 85 | 32 | 30 |
| NATR 45 PP | 45 | 72 | 85 | 32 | 30 |
| NATV 50 PP | 50 | 76 | 90 | 32 | 30 |
| NATR 50 PP | 50 | 76 | 90 | 32 | 30 |
| NUTR PWTR | |||||||||||
| Dimensions(mm) | Basic load ratings | ||||||||||
| Designation | D | d | B | C | d1 | rmin. | r1min. | dyn. Cr KN | stat. Cor KN | Fr permKN | For permKN |
| NUTR15 | 35 | 15 | 19 | 18 | 20 | 0.6 | 0.3 | 15 | 16.8 | 8.6 | 16.8 |
| PWTR15-2RS | 35 | 15 | 19 | 18 | 20 | 0.6 | 0.3 | 11.6 | 11.3 | 9.4 | 11.3 |
| NUTR17 | 40 | 17 | 21 | 20 | 22 | 1 | 0.5 | 18.4 | 22.6 | 13.1 | 22.6 |
| PWTR17-2RS | 40 | 17 | 21 | 20 | 22 | 1 | 0.5 | 13.2 | 13.8 | 13.8 | 13.8 |
| NUTR1542 | 42 | 15 | 19 | 18 | 20 | 0.6 | 0.3 | 18.1 | 21.9 | 21.9 | 21.9 |
| PWTR1542-2RS | 42 | 15 | 19 | 18 | 20 | 0.6 | 0.3 | 13.5 | 14.1 | 14.1 | 14.1 |
| NUTR1747 | 47 | 17 | 21 | 20 | 22 | 1 | 0.5 | 21.3 | 28 | 28 | 28 |
| PWTR1747-2RS | 47 | 17 | 21 | 20 | 22 | 1 | 0.5 | 14.8 | 16.4 | 16.4 | 16.4 |
| NUTR20 | 47 | 20 | 25 | 24 | 27 | 1 | 0.5 | 28 | 35 | 16.4 | 33 |
| PWTR20-2RS | 47 | 20 | 25 | 24 | 27 | 1 | 0.5 | 23.2 | 25.5 | 18.3 | 25.5 |
| NUTR2052 | 52 | 20 | 25 | 24 | 27 | 1 | 0.5 | 31.5 | 41 | 38.5 | 41 |
| PWTR2052-2RS | 52 | 20 | 25 | 24 | 27 | 1 | 0.5 | 25.5 | 29.5 | 29.5 | 29.5 |
| NUTR25 | 52 | 25 | 25 | 24 | 31 | 1 | 0.5 | 29 | 37.5 | 17.3 | 34.5 |
| PWTR25-2RS | 52 | 25 | 25 | 24 | 31 | 1 | 0.5 | 24.2 | 28 | 19.3 | 28 |
| NUTR2562 | 62 | 25 | 25 | 24 | 31 | 1 | 0.5 | 35.5 | 50 | 50 | 50 |
| PWTR2562-2RS | 62 | 25 | 25 | 24 | 31 | 1 | 0.5 | 29 | 36 | 36 | 36 |
| NUTR30 | 62 | 30 | 29 | 28 | 38 | 1 | 0.5 | 40 | 50 | 23.5 | 46.5 |
| PWTR30-2RS | 62 | 30 | 29 | 28 | 38 | 1 | 0.5 | 35 | 39.5 | 25.5 | 39.5 |
| NUTR3072 | 72 | 30 | 29 | 28 | 38 | 1 | 0.5 | 47.5 | 64 | 64 | 64 |
| PWTR3072-2RS | 72 | 30 | 29 | 28 | 38 | 1 | 0.5 | 41 | 49 | 49 | 49 |
| NUTR35 | 72 | 35 | 29 | 28 | 44 | 1.1 | 0.6 | 44.5 | 60 | 32 | 60 |
| PWTR35-2RS | 72 | 35 | 29 | 28 | 44 | 1.1 | 0.6 | 38.5 | 46.5 | 34.5 | 46.5 |
| NUTR3580 | 80 | 35 | 29 | 28 | 44 | 1.1 | 0.6 | 51 | 72 | 72 | 72 |
| PWTR3580-2RS | 80 | 35 | 29 | 28 | 44 | 1.1 | 0.6 | 43.5 | 55 | 55 | 55 |
| NUTR40 | 80 | 40 | 32 | 30 | 50.5 | 1.1 | 0.6 | 55 | 75 | 30.5 | 60 |
| PWTR40-2RS | 80 | 40 | 32 | 30 | 50.5 | 1.1 | 0.6 | 44.5 | 53 | 35 | 53 |
| NUTR45 | 85 | 45 | 32 | 30 | 55.2 | 1.1 | 0.6 | 56 | 78 | 31.5 | 61 |
| PWTR45-2RS | 85 | 45 | 32 | 30 | 55.2 | 1.1 | 0.6 | 45 | 55 | 36 | 55 |
| NUTR4090 | 90 | 40 | 32 | 30 | 50.5 | 1.1 | 0.6 | 66 | 95 | 84 | 95 |
| PWTR4090-2RS | 90 | 40 | 32 | 30 | 50.5 | 1.1 | 0.6 | 52 | 66 | 66 | 66 |
| NUTR50 | 90 | 50 | 32 | 30 | 59.8 | 1.1 | 0.6 | 57 | 81 | 32 | 62 |
| PWTR50-2RS | 90 | 50 | 32 | 30 | 59.8 | 1.1 | 0.6 | 45.5 | 57 | 37 | 57 |
| NUTR45100 | 100 | 45 | 32 | 30 | 55.2 | 1.1 | 0.6 | 71 | 107 | 106 | 107 |
| PWTR45100-2RS | 100 | 45 | 32 | 30 | 55.2 | 1.1 | 0.6 | 56 | 74 | 74 | 74 |
| NUTR50110 | 110 | 50 | 32 | 30 | 59.8 | 1.1 | 0.6 | 76 | 120 | 120 | 120 |
| PWTR50110-2RS | 110 | 50 | 32 | 30 | 59.8 | 1.1 | 0.6 | 59 | 82 | 82 | 82 |
Address
No.183,Longfeng,West of Zhangting industrial Zone,Yuyao,Ningbo,China
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