30344 Series

Metric Series Tapered Roller Bearings

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Grouped product items
Parts Number		Qty
30344 Metric Series Tapered Roller Bearings			Add to Compare You can use this service by registering as a member.
30344P5 Metric Series Tapered Roller Bearings			Add to Compare You can use this service by registering as a member.
30344P6 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

30344

Boundary Dimensions

d	220	mm	Bore diameter
D	460	mm	Outside diameter
T	97	mm	Total width
B	88	mm	Width of inner ring
C	73	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	1760000	N	Basic dynamic load rating
C_0r	1990000	N	Basic static load rating

Speeds

Mechanical (Jet lubrication)	1500	min^-1	Properly designed and controlled jet lubrication
Grease	750	min^-1	Grease lubrication
Oil (Oil-bath)	1000	min^-1	Oil-bath lubrication

Dimensions

85.3

Effective load center

Abutment and Fillet Dimensions

da (min.)	253	mm	Diameter of shaft abutment
Db (min.)	414	mm	Diameter of housing abutment
Da (min.)	390	mm	Diameter of housing abutment
Da (max.)	438	mm	Diameter of housing abutment
Sa	12	mm	Minimum width of space required in housing on large side face
Sb	24	mm	Minimum width of space required in housing on small side face
db (max.)	283	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.)

72.4

Properties

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)
30344	220	460	97	88	73	1760000	1990000		1500	750	1000	72.4

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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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More Information
NSK Product Type2	TRBSR_MD
NSK Product Type	Bearing
Designations	30344