Tolerances for inch tapered roller bearings

Inner ring
d		t_Δdmp				t_Kia
		Tolerance classes
		Normal, CL2		CL3, CL0
>	≤	U	L	U	L
mm		μm		μm

–	76,2	+13	0	+13	0	Values are given in outer ring table
76,2	101,6	+25	0	+13	0
101,6	266,7	+25	0	+13	0

266,7	304,8	+25	0	+13	0
304,8	609,6	+51	0	+25	0
609,6	914,4	+76	0	+38	0


Outer ring
D		t_ΔDmp				t_Kia, t_Kea				t_Kea
		Tolerance classes				Tolerance classes				Tolerance class
		Normal, CL2		CL3, CL0		Normal	CL2	CL3	CL0	CL7C
>	≤	H	L	H	L
mm		μm		μm		μm

–	304,8	+25	0	+13	0	51	38	8	4	Table 1
304,8	609,6	+51	0	+25	0	51	38	18	9
609,6	914,4	+76	0	+38	0	76	51	51	26


Abutment width of single row bearing
d		D		t_ΔTs
				Tolerance classes
				Normal		CL2		CL3, CL0
>	≤	>	≤	U	L	U	L	U	L
mm		mm		μm		μm		μm

–	101,6	–	–	+203	0	+203	0	+203	–203
101,6	266,7	–	–	+356	–254	+203	0	+203	–203
266,7	304,8	–	–	+356	–254	+203	0	+203	–203

304,8	609,6	–	508	+381	–381	+381	–381	+203	–203
304,8	609,6	508	–	+381	–381	+381	–381	+381	–381
609,6	–	–	–	+381	–381	–	–	+381	–381

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