YDTech® manufacturer of short cylindrical rollers for (wind turbine, motor, linear, robot, instrument) high precision bearings! supplier of super ultra thin steel rollers for (crossed roller, joint, rotary table, main shaft) super precision bearings in china.

standard sizes: D3.8*L1.9 ,D3.8*L2.1, D4.8*L1.9 ,D4.8*L2.1, D5.8*L2.2 ,D5.8*L2.4, D6.8*L2.3 ,D6.8*L2.4, D7.8*L2.3 ,D7.8*L2.5, D9.8*L2.2 ,D9.8*L2.4, D11.8*L3.4, D13.8*L5.6, D15.5*L5.6, D1.5*L1.40, D1.5*L1.43, D1.5*L1.45, D1.5*L1.5, D2*L1.90, D2*L1.93, D2*L1.95, D2*2L, D2.05*L1.98, D2.5*L2.4, D2.5*L2.5, D3*L2.85, D3*L2.90, D3*L2.93, D3*L2.95, D3*L3, D3.5*L3.4, D3.5L*3.5, D4*L3.85, D4*L3.90, D4*L3.93, D4*L3.95, D4*L4, D4.978*L5.563, D5*L6, D5.5*6, D6*65.6*3, D4*L3.8, D5.6*L3.1, D8*L11, D8*L9, D5.6*L3, D5.563*L3, D5.563*L3.145, D5.563*L3.15, D5*L5.08, D4.98*L5.59, D5*L7.5, D5*L3.175, D6.35*L5.59, D4.99*L5.563, D4.978*L5.563, D5.508*L3.175, D6*L11, D5.5*L6.06

application: cross roller bearings, cross bearings, joint bearings, rotary table bearings, wind turbine bearings, motor bearings, linear bearings, ? cross roller bearings, high-grade precision cylinder, one-way clutch, roller one-way clutch. ? robot, robot bearings, precision instrument bearings, rotary table, automated production lines, wind turbines, new energy projects, environmental protection motor, high-speed table bearings, precision rotary table bearings, linear bearings, crossed roller bearings, joint bearings, precision rotary table bearings ,precision main shaft bearings, high precision bearings.

material: GCr15,52100,100Cr6, 35CRMOV, SS440C, 420C,42CRMO,304. hardness: HRC58-65

diameter tolerance: 0.005mm, 0.003mm, 0.002mm, 0.001mm, 0.0005mm. length tolerance:+/-0.05,+/-0.03, +0/-0.015,+/-0.01, +0/-0.005. chamfer:R0.03-R0.3mm or customize. parallelism:0.01mm, 0.005mm. perpendicularity:0.01mm, 0.005mm. face runout:0.01mm, 0.005mm. circularity:0.001mm, 0.0005mm. cylindricity:0.001mm, 0.0005mm roughness:Ra0.08um, Ra0.04um.

we are professional manufacture of bearing rollers and cylindrical needle rollers. we produce rollers of diameter 0.5 mm to 60 mm. the rollers could satisfy the request of DIN 5402 G2 rollers.