30252 Series

Metric Series Tapered Roller Bearings

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Grouped product items
Parts Number
30252 Metric Series Tapered Roller Bearings			Add to Compare You can use this service by registering as a member.
30252P5 Metric Series Tapered Roller Bearings			Add to Compare You can use this service by registering as a member.
30252P6 Metric Series Tapered Roller Bearings			Add to Compare You can use this service by registering as a member.

Product Information

Display units Metric Imperial

Designations

30252

Boundary Dimensions

d	260	mm	Bore diameter
D	480	mm	Outside diameter
T	89	mm	Total width
B	80	mm	Width of inner ring
C	67	mm	Width of outer ring
Cup r (min.)	5	mm	Chamfer dimension of outer ring (Cup)
Cone r (min.)	6	mm	Chamfer dimension of inner ring (Cone)

Basic Load Ratings

C_r	1460000	N	Basic dynamic load rating
C_0r	1700000	N	Basic static load rating

Speeds

Grease	670	min^-1	Grease lubrication
Oil (Oil-bath)	900	min^-1	Oil-bath lubrication

Dimensions

94.5

Effective load center

Abutment and Fillet Dimensions

da (min.)	302	mm	Diameter of shaft abutment
Db (min.)	447	mm	Diameter of housing abutment
Da (min.)	421	mm	Diameter of housing abutment
Da (max.)	458	mm	Diameter of housing abutment
Sa	12	mm	Minimum width of space required in housing on large side face
Sb	22	mm	Minimum width of space required in housing on small side face
db (max.)	316	mm	Diameter of shaft abutment
ra (max.)	5	mm	Radius of shaft or housing fillet of inner ring
ra (max.)	4	mm	Radius of shaft or housing fillet of outer ring

Calculation factors

e	0.44	Constant
Y0	0.74	Axial load Factors
Y1	1.4	Axial load Factors

Mass

(approx.)

60.7

Drawing for Reference

Designations	Boundary Dimensions					Basic Load Ratings		Tolerance Class	Limiting Speeds		Mass
Designations	d (mm)	D (mm)	T (mm)	B (mm)	C (mm)	C_r (N)	C_0r (N)	Tolerance Class	Grease (min^-1)	Oil (Oil-bath) (min^-1)	(approx.) (kg)
30252	260	480	89	80	67	1460000	1700000		670	900	60.7

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Not to scale.
(*) The chamfer dimensions are minimum values.
Suffix C represents medium-angle tapered roller bearings. Since they are designed for specific applications, please consult NSK when using bearings with suffix C.
The bore diameter "no-go side" tolerances (High) specified in this drawing do not necessarily apply within a distance from the ring face to 1.2 times the chamfer dimension r (max).
Some of these tolerances conform to NSK standards.

CAD

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NSK Product Type2	TRBSR_MD
NSK Product Type	Bearing
Designations	30252