BL312 Series

Maximum-Type Ball Bearings

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Grouped product items
Parts Number
BL312 Maximum-Type Ball Bearings			Add to Compare You can use this service by registering as a member.
BL312C3 Maximum-Type Ball Bearings			Add to Compare You can use this service by registering as a member.

Product Information

Display units Metric Imperial

Designations

BL312

Boundary Dimensions

d	60	mm	Bore diameter
D	130	mm	Outside diameter
B	31	mm	Width
r (min.)	2.1	mm	Chamfer dimension

Basic Load Ratings

C_r	94000	N	Basic dynamic load rating
C_0r	71500	N	Basic static load rating

Speeds

Grease	5000	min^-1	Grease lubrication
Oil (Oil-bath)	6000	min^-1	Oil-bath lubrication

Abutment and Fillet Dimensions

da (min.)	71	mm	Diameter of shaft abutment
Da (max.)	119	mm	Diameter of housing abutment
db (max.)	79	mm	Diameter of shaft abutment
ra (max.)	2	mm	Radius of shaft or housing fillet

Mass

(approx.)

1.88

CAD

FAQs (3)

Customer Questions

What are radial loads and axial loads?

Loads are defined by their direction. Loads perpendicular to the shaft are called radial loads and loads parallel to the shaft are called axial (thrust) loads.

How do deep groove ball bearings (DGBBs) differ from single-row angular contact ball bearings?

While DGBBs can handle axial loads in both directions, single-row angular contact ball bearings can only receive axial load in one direction.

What are the differences between open, sealed, and shielded deep groove ball bearings?

Seals and shields offer additional protection for bearing components and help to improve and maintain lubrication. In terms of sealing performance, sealed bearings rank best, followed by shielded bearings, then finally open bearings.
NSK uses supplementary designations D, DU, DW, and V (DD, DDU, DDW, VV) for sealed bearings and Z (ZZ) for shielded bearings. No supplementary designations are listed for open bearings.

More Information

More Information
NSK Product Type2	DGBB_MT
NSK Product Type	Bearing
Designations	BL312