In industrial transmission systems, standard bearings often fail under repeated impact loads, rail friction, or eccentric motion. BMT Bearings Yoke Type Track Rollers are specifically engineered to perform in these demanding conditions.
We have long-term experience supplying to conveyor system manufacturers, automation equipment builders, agricultural machinery producers, and packaging line integrators.
Customers typically focus on three key performance requirements:
Stable rolling performance
Long service life
Reduced maintenance frequency
To meet these needs, we continuously improve material selection, machining precision, and sealing design.

Unlike conventional radial bearings, Yoke Type Track Rollers are designed for direct contact with tracks, rails, or cam surfaces.
This requires the outer ring to withstand:
To ensure durability, we apply:
A reinforced outer ring significantly improves resistance to deformation under heavy load conditions, especially in start-stop operating systems.
| 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 |
Our Yoke Type Track Rollers are widely used in:
These environments often involve long operating hours, vibration, dust exposure, and uneven load distribution.
To improve reliability, we focus on:
Raceway Grinding Precision Automated grinding ensures smooth rolling and reduced noise.
Heat Treatment Consistency Stable hardness prevents early fatigue cracking and improves contact life.
Sealing Design Options Sealed structures help prevent dust, moisture, and contamination ingress.
Proper lubrication combined with sealing significantly improves long-term performance in continuous production systems.
We prioritize real industrial performance through controlled production processes.
Material selection depends on load, temperature, and working conditions.
Every batch is inspected before shipment to ensure consistent quality.
Traditional bearings are not designed for direct rail or track contact. Long-term use in such conditions may lead to:
Yoke Type Track Rollers are specifically engineered for rolling contact on guiding surfaces. Their outer ring geometry helps distribute load more evenly and reduces localized stress.
This makes them more suitable for:
We supply a wide range of designs to match different machine structures:
We support OEM projects for global machinery manufacturers.
BMT Bearings operates automated grinding and assembly lines with large-scale production capacity.
We follow ISO9001 and IATF 16949 quality management systems.
Each product is tested for:
Anti-rust packaging is applied for export shipments to ensure safe transportation.
Used in linear motion systems and automated conveyor lines.
Supports stable operation under continuous vibration and high-speed movement.
Performs reliably in dust, mud, and outdoor environments.
Improves motion accuracy in high-speed production lines.
Widely used in lifting systems, guide rails, and heavy-load transport equipment.
With years of export experience across Europe, Asia, South America, and the Middle East, we provide engineering-based product selection support.
When drawings or application details are provided, our team evaluates:
This ensures a more suitable technical solution instead of simple size matching.
To maximize service life, we recommend:
Well-machined rail surfaces and correct hardness matching significantly improve performance stability.
BMT Bearings focuses on practical industrial bearing performance, not just theoretical specifications.
From raw material selection to precision grinding and final inspection, every step is controlled to ensure stable operation in real working environments.
We welcome OEM cooperation, bulk orders, and long-term distributor partnerships worldwide.
Yoke Type Track Rollers are designed for linear or guiding motion systems where the bearing runs directly on a track, rail, or cam surface. They are widely used in conveyor systems, automation equipment, packaging machines, and material handling systems.
Standard bearings are mainly designed for rotational motion inside a housing, while Yoke Type Track Rollers are designed for direct contact with external guiding surfaces. They can handle:
We commonly use:
Material selection depends on load conditions and working environment.
Yes. We offer sealed and reinforced versions designed for:
Proper sealing and lubrication greatly improve service life in harsh environments.
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