30303D Series

Metric Series Tapered Roller Bearings

Skip to the beginning of the images gallery

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

Grouped product items
Parts Number		Qty
30303D Metric Series Tapered Roller Bearings			Add to Compare You can use this service by registering as a member.
30303DP5 Metric Series Tapered Roller Bearings			Add to Compare You can use this service by registering as a member.
30303DP6 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

30303D

Boundary Dimensions

d	17	mm	Bore diameter
D	47	mm	Outside diameter
T	15.25	mm	Total width
B	14	mm	Width of inner ring
C	10.5	mm	Width of outer ring
Cup r (min.)	1	mm	Chamfer dimension of outer ring (Cup)
Cone r (min.)	1	mm	Chamfer dimension of inner ring (Cone)

Basic Load Ratings

C_r	27000	N	Basic dynamic load rating
C_0r	20300	N	Basic static load rating

Speeds

Mechanical (Jet lubrication)	16000	min^-1	Properly designed and controlled jet lubrication
Grease	8000	min^-1	Grease lubrication
Oil (Oil-bath)	11000	min^-1	Oil-bath lubrication

Dimensions

15.4

Effective load center

Abutment and Fillet Dimensions

da (min.)	29	mm	Diameter of shaft abutment
Db (min.)	44	mm	Diameter of housing abutment
Da (min.)	34	mm	Diameter of housing abutment
Da (max.)	41	mm	Diameter of housing abutment
Sa	2	mm	Minimum width of space required in housing on large side face
Sb	4.5	mm	Minimum width of space required in housing on small side face
db (max.)	23	mm	Diameter of shaft abutment
ra (max.)	1	mm	Radius of shaft or housing fillet of inner ring
ra (max.)	1	mm	Radius of shaft or housing fillet of outer ring

Calculation factors

e	0.81	Constant
Y0	0.41	Axial load Factors
Y1	0.74	Axial load Factors

Mass

(approx.)

0.129

Properties

Contact angle	D: about 28°
Cage	( ): Pressed steel cage

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	Mechanical (Jet lubrication) (min^-1)	Grease (min^-1)	Oil (Oil-bath) (min^-1)	(approx.) (kg)
30303D	17	47	15.25	14	10.5	27000	20300		16000	8000	11000	0.129

You can use this service by registering as a member.

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

FAQs (1)

Customer Questions

More Information

More Information
NSK Product Type2	TRBSR_MD
NSK Product Type	Bearing
Designations	30303D