YDTech® manufacturer of precision short cylindrical rollers for (precision, linear, bearing, cross, optical) rails! supplier of super ultra thin steel rollers for relay, flow valves, elevator group, pneumatic fingers, in china.

standard sizes: 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

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.

application: precision rail type cylinders, precision rail type cylinders, roller type relay, lift valve groups, mechanical flow valve, pneumatic finger, gripper cylinders, electromagnetic flow valves, precision measuring platform, optical measuring instrument guide, manual displacement platform, electric displacement platform, cross rail table, precision cylinder cylinder, linear bearing rail, slide cylinder, rodless cylinder,

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.