30348 Series

Metric Series Tapered Roller Bearings

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Grouped product items
Parts Number
30348 Metric Series Tapered Roller Bearings			Add to Compare You can use this service by registering as a member.
30348P5 Metric Series Tapered Roller Bearings			Add to Compare You can use this service by registering as a member.
30348P6 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

30348

Boundary Dimensions

d	240	mm	Bore diameter
D	500	mm	Outside diameter
T	105	mm	Total width
B	95	mm	Width of inner ring
C	80	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	2040000	N	Basic dynamic load rating
C_0r	2340000	N	Basic static load rating

Speeds

Grease	670	min^-1	Grease lubrication
Oil (Oil-bath)	950	min^-1	Oil-bath lubrication

Dimensions

92.8

Effective load center

Abutment and Fillet Dimensions

da (min.)	273	mm	Diameter of shaft abutment
Db (min.)	447	mm	Diameter of housing abutment
Da (min.)	422	mm	Diameter of housing abutment
Da (max.)	478	mm	Diameter of housing abutment
Sa	12	mm	Minimum width of space required in housing on large side face
Sb	25	mm	Minimum width of space required in housing on small side face
db (max.)	308	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	0.36	Constant
Y0	0.92	Axial load Factors
Y1	1.7	Axial load Factors

Mass

(approx.)

92.6

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)
30348	240	500	105	95	80	2040000	2340000		670	950	92.6

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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	30348