YDTech® manufacturer of precision short cylindrical rollers for (displacement, cross rail) platform! supplier of super ultra thin steel rollers for (air, oil, hydro) cylinders 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.

a rod boot surrounds the piston rod with an external, expandable cover to protect the rod surface from external contamination. requires additional rod length which is determined by the cylinder stroke.

standard rod sizes are normally suitable for all applications except for long stroke or high thrust applications. proper selection of minimum rod size may be determined

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.