Track rollers with cylindrical or crowned outer ring - type LR

•  Series LR rollers are also called CAM ROLLERS, can be used in the heavy loads track or used as an idler wheel. They are widely used in the particular application that the friction should be reduced.
•  The outer diameter surface of rollers is shaped to the crowned runner surface with R500 (suffix U), so make the stresses well when rollers working.
•  Rollers take the internal structure design of deep groove ball bearings or double row angular contact ball bearings and have a particularly thick-walled outer ring, so the rollers can accommodate higher loads.
•  Rollers are made of the high-quality bearing steel, processed by heat treatment and precision grind, and are filled with a long service life, high -grade and multi-purposes grease. Rollers take the metal shield (suffix KDD) or rubble seal (suffix NPP) to prevent the dust. YITONG also can provide the rollers with concentric or eccentric pivot. Some types of the rollers can be made from the corrosion resistance stainless steel.

■ Characteristics of the guide system that series LR rollers are applied :
1. Low resistance, long service life, widely-use
Being cam rollers with crowned runner surface R500, make its stresses in well-distributed between rollers and track when working, thus the stresses centralization are avoided, the friction resistance are reduced and the service life of rollers have been improved a lot. Most of the double row cam rollers can be relubricated through the filling hole on the inner ring to adapt the adverse working conditions.
2. Easy installation
After rollers assembled the concentric or eccentric pivot, installation can be made convenient. To adjust the eccentric one's eccentricity, the rollers can get the fitting preload.
3. Smooth running, minimum error
Besides we produce the series LR cam rollers according to the standard of rolling bearings, we also make the strict control on the rotary accuracy of outer ring in order to meet special working mode that inner ring is fixed while outer ring running.

Series LR52... and LR53... can be re-lubricated through a hole in the inner ring.

Track Roller No. Weight Dimensions (mm) Load Ratings Fatigue Limit Load Speed Yi-Tong GERMAN EURO ≈(g) D d B C R Rs Cw(N) Cow(N) Puw(N) nD seals nD shields LR 604 NPP LR604NPP   10 13 4 4 4 - 0.2 860 350 7 24000 35000 LR 604 NPPU LR604NPPU   10 13 4 4 4 500 0.2 860 350 7 24000 35000 LR 604 KDD LR604KDD   10 13 4 4 4 - 0.2 860 350 7 24000 35000 LR 604 KDDU LR604KDDU   10 13 4 4 4 500 0.2 860 350 7 24000 35000 LR 605 NPP LR605NPP   10 16 5 5 5 - 0.2 1190 490 10 23000 33000 LR 605 NPPU LR605NPPU   10 16 5 5 5 500 0.2 1190 490 10 23000 33000 LR 605 KDD LR605KDD   10 16 5 5 5 - 0.2 1190 490 10 23000 33000 LR 605 KDDU LR605KDDU   10 16 5 5 5 500 0.2 1190 490 10 23000 33000 LR 606 NPP LR606NPP   10 19 6 6 6 - 0.3 1740 700 40 22000 31000 LR 606 NPPU LR606NPPU   10 19 6 6 6 500 0.3 1740 700 40 22000 31000 LR 606 KDD LR606KDD   10 19 6 6 6 - 0.3 1740 700 40 22000 31000 LR 606 KDDU LR606KDDU   10 19 6 6 6 500 0.3 1740 700 40 22000 31000 LR 607 NPP LR607NPP   10 22 7 6 6 - 0.3 2130 870 46 20000 29000 LR 607 NPPU LR607NPPU   10 22 7 6 6 500 0.3 2130 870 46 20000 29000 LR 607 KDD LR607KDD   10 22 7 6 6 - 0.3 2130 870 46 20000 29000 LR 607 KDDU LR607KDDU   10 22 7 6 6 500 0.3 2130 870 46 20000 29000 LR 608 NPP LR608NPP   20 24 8 7 7 - 0.3 2750 1250 58 19000 28000 LR 608 NPPU LR608NPPU   20 24 8 7 7 500 0.3 2750 1250 58 19000 28000 LR 608 KDD LR608KDD   20 24 8 7 7 - 0.3 2750 1250 58 19000 28000 LR 608 KDDU LR608KDDU   20 24 8 7 7 500 0.3 2750 1250 58 19000 28000 LR 6000 NPP LR6000NPP   20 28 10 8 8 - 0.3 3650 1700 52 17000 24000 LR 6000 NPPU LR6000NPPU   20 28 10 8 8 500 0.3 3650 1700 52 17000 24000 LR 6000 KDD LR6000KDD   20 28 10 8 8 - 0.3 3650 1700 52 17000 24000 LR 6000KDDU LR6000KDDU   20 28 10 8 8 500 0.3 3650 1700 52 17000 24000 LR 6001 NPP LR6001NPP   30 30 12 8 8 - 0.3 4300 2100 77 16000 22000 LR 6001 NPPU LR6001NPPU   30 30 12 8 8 500 0.3 4300 2100 77 16000 22000 LR 6001 KDD LR6001KDD   30 30 12 8 8 - 0.3 4300 2100 77 16000 22000 LR 6001KDDU LR6001KDDU   30 30 12 8 8 500 0.3 4300 2100 77 16000 22000 LR 200 NPP LR200NPP   50 32 10 9 9 - 0.6 4350 2130 88 13000 17000 LR 200 NPPU LR200NPPU 361200R 50 32 10 9 9 500 0.6 4350 2130 88 13000 17000 LR 200 KDD LR200KDD   50 32 10 9 9 - 0.6 4350 2130 88 13000 17000 LR 200 KDDU LR200KDDU   50 32 10 9 9 500 0.6 4350 2130 88 13000 17000 LR 201 NPP LR201NPP   50 35 12 10 10 - 0.6 5600 2700 112 12000 15000 LR 201 NPPU LR201NPPU 361201R 50 35 12 10 10 500 0.6 5600 2700 112 12000 15000 LR 201 KDD LR201KDD   50 35 12 10 10 - 0.6 5600 2700 112 12000 15000 LR 201 KDDU LR201KDDU   50 35 12 10 10 500 0.6 5600 2700 112 12000 15000 LR 201-15NPP LR201RR  LR 201 RR 70 35 12 15 10 - 0.6 5600 2700 112 12000 15000 LR 201-15 NPPU LR201RRU LR 201 RRU 70 35 12 15 10 500 0.6 5600 2700 112 12000 15000 LR 201-15KDD   70 35 12 15 10 - 0.6 5600 2700 112 12000 15000 LR 201-15 KDDU   70 35 12 15 10 500 0.6 5600 2700 112 12000 15000 LR 202 NPP LR202NPP   70 40 15 11 11 - 0.6 6500 3300 136 11000 13000 LR 202 NPPU LR202NPPU 361202R 70 40 15 11 11 500 0.6 6500 3300 136 11000 13000 LR 202 KDD LR202KDD   70 40 15 11 11 - 0.6 6500 3300 136 11000 13000 LR 202 KDDU LR202KDDU   70 40 15 11 11 500 0.6 6500 3300 136 11000 13000 LR 202-14NPP LR202RR  LR 202 RR 80 40 15 14.4 11 - 0.6 6500 3300 136 11000 13000 LR 202-14 NPPU LR202RRU LR 202 RRU 80 40 15 14.4 11 500 0.6 6500 3300 136 11000 13000 LR 202-14KDD   80 40 15 14.4 11 - 0.6 6500 3300 136 11000 13000 LR 202-14 KDDU   80 40 15 14.4 11 500 0.6 6500 3300 136 11000 13000 LR 203 NPP LR203NPP   110 47 17 12 12 - 0.6 8400 4400 183 9000 12000 LR 203 NPPU LR203NPPU 361203R 110 47 17 12 12 500 0.6 8400 4400 183 9000 12000 LR 203 KDD LR203KDD   110 47 17 12 12 - 0.6 8400 4400 183 9000 12000 LR 203 KDDU LR203KDDU   110 47 17 12 12 500 0.6 8400 4400 183 9000 12000 LR 204 NPP LR204NPP   150 52 20 14 14 - 1 10500 5600 233 8000 10000 LR 204 NPPU LR204NPPU 361204R 150 52 20 14 14 500 1 10500 5600 233 8000 10000 LR 204 KDD LR204KDD   150 52 20 14 14 - 1 10500 5600 233 8000 10000 LR 204 KDDU LR204KDDU   150 52 20 14 14 500 1 10500 5600 233 8000 10000 LR 205 NPP LR205NPP   230 62 25 15 15 - 1 12500 7100 291 7000 8500 LR 205 NPPU LR205NPPU 361205R 230 62 25 15 15 500 1 12500 7100 291 7000 8500 LR 205 KDD LR205KDD   230 62 25 15 15 - 1 12500 7100 291 7000 8500 LR 205 KDDU LR205KDDU   230 62 25 15 15 500 1 12500 7100 291 7000 8500 LR 206 NPP LR206NPP   330 72 30 16 16 - 1 16600 9600 391 5500 7500 LR 206 NPPU LR206NPPU 361206R 330 72 30 16 16 500 1 16600 9600 391 5500 7500 LR 206 KDD LR206KDD   330 72 30 16 16 - 1 16600 9600 391 5500 7500 LR 206 KDDU LR206KDDU   330 72 30 16 16 500 1 16600 9600 391 5500 7500 LR 207 NPP LR207NPP   400 80 35 17 17 - 1.1 20200 11900 490 4500 6300 LR 207 NPPU LR207NPPU 361207R 400 80 35 17 17 500 1.1 20200 11900 490 4500 6300 LR 207 KDD LR207KDD   400 80 35 17 17 - 1.1 20200 11900 490 4500 6300 LR 207 KDDU LR207KDDU   400 80 35 17 17 500 1.1 20200 11900 490 4500 6300 LR 208 NPP LR208NPP   450 85 40 18 18 - 1.1 22800 13600 530 4000 5000 LR 208 NPPU LR208NPPU   450 85 40 18 18 500 1.1 22800 13600 530 4000 5000 LR 208 KDD LR208KDD   450 85 40 18 18 - 1.1 22800 13600 530 4000 5000 LR 208 KDDU LR208KDDU   450 85 40 18 18 500 1.1 22800 13600 530 4000 5000 LR 209 NPP LR209NPP   500 90 45 19 19 - 1.1 22500 13700 564 3600 4500 LR 209 NPPU LR209NPPU   500 90 45 19 19 500 1.1 22500 13700 564 3600 4500 LR 209 KDD LR209KDD   500 90 45 19 19 - 1.1 22500 13700 564 3600 4500 LR 209 KDDU LR209KDDU   500 90 45 19 19 500 1.1 22500 13700 564 3600 4500 LR 50/5 NPP LR50/5NPP   10 17 5 7 7 - 0.2 1650 950 39 12000 16000 LR 50/5 NPPU LR50/5NPPU   10 17 5 7 7 500 0.2 1650 950 39 12000 16000 LR 50/5 KDD LR50/5KDD   10 17 5 7 7 - 0.2 1650 950 39 12000 16000 LR 50/5 KDDU LR50/5KDDU   10 17 5 7 7 500 0.2 1650 950 39 12000 16000 LR 50/6 NPP LR50/6NPP   20 19 6 9 9 - 0.3 2650 1310 54 11000 15000 LR 50/6 NPPU LR50/6NPPU   20 19 6 9 9 500 0.3 2650 1310 54 11000 15000 LR 50/6 KDD LR50/6KDD   20 19 6 9 9 - 0.3 2650 1310 54 11000 15000 LR 50/6 KDDU LR50/6KDDU   20 19 6 9 9 500 0.3 2650 1310 54 11000 15000 LR 50/7 NPP LR50/7NPP   20 22 7 10 10 - 0.3 3300 1690 69 10000 14000 LR 50/7 NPPU LR50/7NPPU   20 22 7 10 10 500 0.3 3300 1690 69 10000 14000 LR 50/7 KDD LR50/7KDD   20 22 7 10 10 - 0.3 3300 1690 69 10000 14000 LR 50/7 KDDU LR50/7KDDU   20 22 7 10 10 500 0.3 3300 1690 69 10000 14000 LR 50/8 NPP LR50/8NPP   30 24 8 11 11 - 0.3 4200 2360 120 10000 14000 LR 50/8 NPPU LR50/8NPPU   30 24 8 11 11 500 0.3 4200 2360 120 10000 14000 LR 50/8 KDD LR50/8KDD   30 24 8 11 11 - 0.3 4200 2360 120 10000 14000 LR 50/8 KDDU LR50/8KDDU   30 24 8 11 11 500 0.3 4200 2360 120 10000 14000 LR 5000 NPP LR5000NPP   30 28 10 12 12 - 0.3 4750 2850 118 9000 13000 LR 5000 NPPU LR5000NPPU   30 28 10 12 12 500 0.3 4750 2850 118 9000 13000 LR 5000 KDD LR5000KDD   30 28 10 12 12 - 0.3 4750 2850 118 9000 13000 LR 5000KDDU LR5000KDDU   30 28 10 12 12 500 0.3 4750 2850 118 9000 13000 LR 5001 NPP LR5001NPP   30 30 12 12 12 - 0.3 4950 3100 128 8500 11000 LR 5001 NPPU LR5001NPPU   30 30 12 12 12 500 0.3 4950 3100 128 8500 11000 LR 5001 KDD LR5001KDD   30 30 12 12 12 - 0.3 4950 3100 128 8500 11000 LR 5001KDDU LR5001KDDU   30 30 12 12 12 500 0.3 4950 3100 128 8500 11000 LR 5002 NPP LR5002NPP   50 35 15 13 13 - 0.3 6500 4100 170 7000 10000 LR 5002 NPPU LR5002NPPU   50 35 15 13 13 500 0.3 6500 4100 170 7000 10000 LR 5002 KDD LR5002KDD   50 35 15 13 13 - 0.3 6500 4100 170 7000 10000 LR 5002KDDU LR5002KDDU   50 35 15 13 13 500 0.3 6500 4100 170 7000 10000 LR 5003 NPP LR5003NPP   70 40 17 14 14 - 0.3 7700 5200 214 6000 9000 LR 5003 NPPU LR5003NPPU   70 40 17 14 14 500 0.3 7700 5200 214 6000 9000 LR 5003 KDD LR5003KDD   70 40 17 14 14 - 0.3 7700 5200 214 6000 9000 LR 5003KDDU LR5003KDDU   70 40 17 14 14 500 0.3 7700 5200 214 6000 9000 LR 5004 NPP LR5004NPP   120 47 20 16 16 - 0.6 11500 7700 317 5500 8000 LR 5004 NPPU LR5004NPPU   120 47 20 16 16 500 0.6 11500 7700 317 5500 8000 LR 5004 KDD LR5004KDD   120 47 20 16 16 - 0.6 11500 7700 317 5500 8000 LR 5004KDDU LR5004KDDU   120 47 20 16 16 500 0.6 11500 7700 317 5500 8000 LR 5005 NPP LR5005NPP   150 52 25 16 16 - 0.6 11600 8100 332 4700 7000 LR 5005 NPPU LR5005NPPU   150 52 25 16 16 500 0.6 11600 8100 332 4700 7000 LR 5005 KDD LR5005KDD   150 52 25 16 16 - 0.6 11600 8100 332 4700 7000 LR 5005KDDU LR5005KDDU   150 52 25 16 16 500 0.6 11600 8100 332 4700 7000 LR 5006 NPP LR5006NPP   250 62 30 19 19 - 1 17200 11100 462 4000 6000 LR 5006 NPPU LR5006NPPU   250 62 30 19 19 500 1 17200 11100 462 4000 6000 LR 5006 KDD LR5006KDD   250 62 30 19 19 - 1 17200 11100 462 4000 6000 LR 5006KDDU LR5006KDDU   250 62 30 19 19 500 1 17200 11100 462 4000 6000 LR 5007 NPP LR5007NPP   300 68 35 20 20 - 1 17600 13100 490 4000 5300 LR 5007 NPPU LR5007NPPU   300 68 35 20 20 500 1 17600 13100 490 4000 5300 LR 5007 KDD LR5007KDD   300 68 35 20 20 - 1 17600 13100 490 4000 5300 LR 5007KDDU LR5007KDDU   300 68 35 20 20 500 1 17600 13100 490 4000 5300 LR 5200 NPP LR5200NPP   70 32 10 14 14 - 0.6 6800 4050 168 8000 11000 LR 5200 NPPU LR5200NPPU   70 32 10 14 14 500 0.6 6800 4050 168 8000 11000 LR 5200 KDD LR5200KDD 305700 C-2Z 70 32 10 14 14 - 0.6 6800 4050 168 8000 11000 LR 5200KDDU LR5200KDDU 305800 C-2Z 70 32 10 14 14 500 0.6 6800 4050 168 8000 11000 LR 5201 NPP LR5201NPP   80 35 12 15.9 15.9 - 0.6 8600 5100 211 7500 10000 LR 5201 NPPU LR5201NPPU   80 35 12 15.9 15.9 500 0.6 8600 5100 211 7500 10000 LR 5201 KDD LR5201KDD 305702 C-2Z 80 35 12 15.9 15.9 - 0.6 8600 5100 211 7500 10000 LR 5201KDDU LR5201KDDU 305801 C-2Z 80 35 12 15.9 15.9 500 0.6 8600 5100 211 7500 10000 LR 5202 NPP LR5202NPP   110 40 15 15.9 15.9 - 0.6 9800 6200 258 7000 10000 LR 5202 NPPU LR5202NPPU   110 40 15 15.9 15.9 500 0.6 9800 6200 258 7000 10000 LR 5202 KDD LR5202KDD 305702 C-2Z 110 40 15 15.9 15.9 - 0.6 9800 6200 258 7000 10000 LR 5202KDDU LR5202KDDU 305802 C-2Z 110 40 15 15.9 15.9 500 0.6 9800 6200 258 7000 10000 LR 5203 NPP LR5203NPP   170 47 17 17.5 17.5 - 0.6 12600 8200 342 5500 7500 LR 5203 NPPU LR5203NPPU   170 47 17 17.5 17.5 500 0.6 12600 8200 342 5500 7500 LR 5203 KDD LR5203KDD 305703 C-2Z 170 47 17 17.5 17.5 - 0.6 12600 8200 342 5500 7500 LR 5203KDDU LR5203KDDU 305803 C-2Z 170 47 17 17.5 17.5 500 0.6 12600 8200 342 5500 7500 LR 5204 NPP LR5204NPP   230 52 20 20.6 20.6 - 1 15800 10500 433 5000 7000 LR 5204 NPPU LR5204NPPU   230 52 20 20.6 20.6 500 1 15800 10500 433 5000 7000 LR 5204 KDD LR5204KDD 305704 C-2Z 230 52 20 20.6 20.6 - 1 15800 10500 433 5000 7000 LR 5204KDDU LR5204KDDU 305804 C-2Z 230 52 20 20.6 20.6 500 1 15800 10500 433 5000 7000 LR 5205 NPP LR5205NPP   340 62 25 20.6 20.6 - 1 18500 13000 532 4500 6500 LR 5205 NPPU LR5205NPPU   340 62 25 20.6 20.6 500 1 18500 13000 532 4500 6500 LR 5205 KDD LR5205KDD 305705 C-2Z 340 62 25 20.6 20.6 - 1 18500 13000 532 4500 6500 LR 5205KDDU LR5205KDDU 305805 C-2Z 340 62 25 20.6 20.6 500 1 18500 13000 532 4500 6500 LR 5206 NPP LR5206NPP   510 72 30 23.8 23.8 - 1 24600 21400 880 3500 5000 LR 5206 NPPU LR5206NPPU   510 72 30 23.8 23.8 500 1 24600 21400 880 3500 5000 LR 5206 KDD LR5206KDD 305706 C-2Z 510 72 30 23.8 23.8 - 1 24600 21400 880 3500 5000 LR 5206KDDU LR5206KDDU 305806 C-2Z 510 72 30 23.8 23.8 500 1 24600 21400 880 3500 5000 LR 5207 NPP LR5207NPP   660 80 35 27 27 - 1.1 30500 22400 927 2800 3900 LR 5207 NPPU LR5207NPPU   660 80 35 27 27 500 1.1 30500 22400 927 2800 3900 LR 5207 KDD LR5207KDD 305707 C-2Z 660 80 35 27 27 - 1.1 30500 22400 927 2800 3900 LR 5207KDDU LR5207KDDU 305807 C-2Z 660 80 35 27 27 500 1.1 30500 22400 927 2800 3900 LR 5208 NPP LR5208NPP   750 85 40 30.2 30.2 - 1.1 34500 25500 1060 2500 3500 LR 5208 NPPU LR5208NPPU   750 85 40 30.2 30.2 500 1.1 34500 25500 1060 2500 3500 LR 5208 KDD LR5208KDD 305708 C-2Z 750 85 40 30.2 30.2 - 1.1 34500 25500 1060 2500 3500 LR 5208KDDU LR5208KDDU 305808 C-2Z 750 85 40 30.2 30.2 500 1.1 34500 25500 1060 2500 3500 LR 5302 NPP LR5302NPP   150 47 15 19 19 - 1 14600 9200 380 6500 10000 LR 5302 NPPU LR5302NPPU   150 47 15 19 19 500 1 14600 9200 380 6500 10000 LR 5302 KDD LR5302KDD 306702 C-2Z 150 47 15 19 19 - 1 14600 9200 380 6500 10000 LR 5302KDDU LR5302KDDU 306802 C-2Z 150 47 15 19 19 500 1 14600 9200 380 6500 10000 LR 5303 NPP LR5303NPP   210 52 17 22.2 22.2 - 1 17200 11100 462 4700 6500 LR 5303 NPPU LR5303NPPU   210 52 17 22.2 22.2 500 1 17200 11100 462 4700 6500 LR 5303 KDD LR5303KDD 306703 C-2Z 210 52 17 22.2 22.2 - 1 17200 11100 462 4700 6500 LR 5303KDDU LR5303KDDU 306803 C-2Z 210 52 17 22.2 22.2 500 1 17200 11100 462 4700 6500 LR 5304 NPP LR5304NPP   340 62 20 22.2 22.2 - 1.1 21100 14500 606 4500 6500 LR 5304 NPPU LR5304NPPU   340 62 20 22.2 22.2 500 1.1 21100 14500 606 4500 6500 LR 5304 KDD LR5304KDD 306704 C-2Z 340 62 20 22.2 22.2 - 1.1 21100 14500 606 4500 6500 LR 5304KDDU LR5304KDDU 306804 C-2Z 340 62 20 22.2 22.2 500 1.1 21100 14500 606 4500 6500 LR 5305 NPP LR5305NPP   500 72 25 25.4 25.4 - 1.1 27500 19500 813 3900 5500 LR 5305 NPPU LR5305NPPU   500 72 25 25.4 25.4 500 1.1 27500 19500 813 3900 5500 LR 5305 KDD LR5305KDD 306705 C-2Z 500 72 25 25.4 25.4 - 1.1 27500 19500 813 3900 5500 LR 5305KDDU LR5305KDDU 306805 C-2Z 500 72 25 25.4 25.4 500 1.1 27500 19500 813 3900 5500 LR 5306 NPP LR5306NPP   670 80 30 30.2 30.2 - 1.1 36500 26500 1100 3100 4300 LR 5306 NPPU LR5306NPPU   670 80 30 30.2 30.2 500 1.1 36500 26500 1100 3100 4300 LR 5306 KDD LR5306KDD 306706 C-2Z 670 80 30 30.2 30.2 - 1.1 36500 26500 1100 3100 4300 LR 5306KDDU LR5306KDDU 306806 C-2Z 670 80 30 30.2 30.2 500 1.1 36500 26500 1100 3100 4300 LR 5307 NPP LR5307NPP   970 90 35 34.9 34.9 - 1.5 44500 33000 1370 2500 3600 LR 5307 NPPU LR530NPPU   970 90 35 34.9 34.9 500 1.5 44500 33000 1370 2500 3600 LR 5307 KDD LR5307KDD 306707 C-2Z 970 90 35 34.9 34.9 - 1.5 44500 33000 1370 2500 3600 LR 5307KDDU LR5307KDDU 306807 C-2Z 970 90 35 34.9 34.9 500 1.5 44500 33000 1370 2500 3600 LR 5308 NPP LR5308NPP   1200 100 40 36.5 36.5 - 1.5 56000 42000 1750 2300 3300 LR 5308 NPPU LR5308NPPU   1200 100 40 36.5 36.5 500 1.5 56000 42000 1750 2300 3300 LR 5308 KDD LR5308KDD 306708 C-2Z 1200 100 40 36.5 36.5 - 1.5 56000 42000 1750 2300 3300 LR 5308KDDU LR5308KDDU 306808 C-2Z 1200 100 40 36.5 36.5 500 1.5 56000 42000 1750 2300 3300