DESIGNMEC produces wide range of rolling elements according to DIN 5402 / ISO 3096 standard, in Bearing Steel (Grade SAE 52100 or equivalent), having hardness (670+170) HV or (58+7) HRC after heat treatment. Various ends configuration available are:-
MEC also manufactures Needles & Rollers with a special logarithmic profile, Type ZB featuring a cylindrical middle section and slightly chamfered stress relieving end zones for extended durability.
Diameter: from 3.00 mm to 10.0 mm
Length: from 3.00 mm to 25.0 mm
DIAMETER TOLERANCE (µm)
SORTING GROUPS (µm)
ROUNDNESS DEVIATION (µm)
ENDS RUNOUT (µm)
LENGTH TOLERANCE (mm)
+0 – 10
+0 – 10
In addition to above mentioned specifications rolling elements with special tolerance limits (plus tolerances, hardness as low as 45 HRc etc) can be supplied on request.
In addition rollers can be provided with end drops (Type ZB) as a stress relieving feature thereby increasing life performance.
In addition rolling elements can be manufactured with different materials (Stainless Steel SS, Mild Steel MS) if the quantities required are sufficient for economical production.