25877/25821

Inch Design Tapered Roller Bearings

25877/25821

Images shown are representations. Designs and specifications may differ from actual products.

Parts Number
25877R/25821R

Display units Metric Imperial

25877R/25821R

d	34.925	mm	Bore diameter
D	73.025	mm	Outside diameter
T	23.812	mm	Total width
B	24.608	mm	Width of inner ring
C	19.05	mm	Width of outer ring
Cup r (min.)	0.8	mm	Chamfer dimension of outer ring (Cup)
Cone r (min.)	1.5	mm	Chamfer dimension of inner ring (Cone)

Cr	87500	N	Basic dynamic load rating
C0r	86000	N	Basic static load rating

Grease	5300	min-1	Grease lubrication
Oil (Oil-bath)	7100	min-1	Oil-bath lubrication

15.7

Effective load center

da	43	mm	Diameter of shaft abutment
Da	65	mm	Diameter of housing abutment
db	40.5	mm	Diameter of shaft abutment
Db	68	mm	Diameter of housing abutment
ra (max.)	1.5	mm	Radius of shaft or housing fillet of inner ring
ra (max.)	0.8	mm	Radius of shaft or housing fillet of outer ring

Mass approx.	0.306	kg	Mass approx.(Cone)
Mass approx.	0.167	kg	Mass approx.(Cup)

CAD

Customer Questions

How are angular contact ball bearings (ACBBs) different from tapered roller bearings (TRBs)?

TRBs provide higher load capacity and rigidity than ACBBs. However, ACBBs can offer rotation at higher speeds than TRBs.

More Information
NSK Product Type2	TRBSR_ID
NSK Product Type	Bearing