Spheric-Trafalgar can supply:

Needle Rollers and Cylindrical Rollers, which are normally manufactured from Chrome Steel, can be made in virtually any material, providing the quantity required is sufficient for production.

Size Range:

Needle Rollers: 1.5 x 4.5 - 8mm x 55mm

Cylindrical Rollers 2.5 x 5 - 50mm x 70mm

Diameter Dw (mm)		Corner Chamfer r (mm)
Over	Up To	min.	max.
-	3	0.1	0.4
3	5	0.1	0.6

 

Length Lw (mm)		Tolerance ( mm)
Over	Up To	From	To
-	6	+0	-0.18
6	10	+0	-0.22
10	18	+0	-0.27
18	30	+0	-0.33
30	50	+0	-0.33

Dimensional and Geometrical Accuracy

Quality Class or Grade	Deviations and Tolerances for diameter Dw			Roundness Tolerance (DIN 7184) (µm)
	Deviation (mm)	Tolerance of one sort (µm)	Division of sorts Deviations (µm)
G2	0 - 10	2	0-2-1-3-2-4-3-5-4-6-5-7-6-8-7-9-8-10	0.8
G3	0 - 10	3	0-3-1.5-4.5-3-6-4.5-3-6-4.5-7.5-6-9-7-10	1.2
G5	0 - 10	5	0-5-3-8-5-10