Tolerances for solid steel shafts - seats for radial ball bearings1)

	mm	–	–	–	µm
Conditions	Shaft diameter	Dimensional tolerance²⁾	Total radial run-out tolerance³⁾	Total axial run-out tolerance³⁾	Ra

Rotating inner ring load or direction of load indeterminate
Light loads (P ≤ 0,05 C)	≤ 17	js5	IT4/2	IT4	0,4
	> 17 to 100	j6	IT5/2	IT5	0,8
	> 100 to 140	k6	IT5/2	IT5	1,6

Normal to heavy loads (0,05 C < P ≤ 0,1 C)	≤ 10	js5	IT4/2	IT4	0,4
	> 10 to 17	j5	IT4/2	IT4	0,4
	> 17 to 100	k5	IT4/2	IT4	0,8
	> 100 to 140	m5	IT4/2	IT4	0,8
	> 140 to 200	m6	IT5/2	IT5	1,6
	> 200 to 500	n6	IT5/2	IT5	1,6
	> 500	p7	IT6/2	IT6	3,2

Stationary inner ring load
Easy axial displacement of inner ring on shaft desirable		g6⁴⁾	IT5/2	IT5	1,6
Easy axial displacement of inner ring on shaft unnecessary		h6	IT5/2	IT5	1,6

Axial loads only		j6	IT5/2	IT5	1,6

1) For insert bearings → Design considerations.
2) Envelope requirement (symbol Ⓔ from ISO 14405-1) not written but applies.
3) Values listed are for bearings to Normal tolerances. For bearings with tighter tolerance classes, use the recommendations in this table.
4) Depending on bearing size, a shifted g6Ⓔ tolerance may be needed to obtain a loose fit.

Support/Inquiries