30260 Series

Metric Series Tapered Roller Bearings

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Grouped product items
Parts Number
30260 Metric Series Tapered Roller Bearings			Add to Compare You can use this service by registering as a member.
30260P5 Metric Series Tapered Roller Bearings			Add to Compare You can use this service by registering as a member.
30260P6 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

30260

Boundary Dimensions

d	300	mm	Bore diameter
D	540	mm	Outside diameter
T	96	mm	Total width
B	85	mm	Width of inner ring
C	71	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	1770000	N	Basic dynamic load rating
C_0r	2100000	N	Basic static load rating

Speeds

Grease	600	min^-1	Grease lubrication
Oil (Oil-bath)	800	min^-1	Oil-bath lubrication

Dimensions

105.1

Effective load center

Abutment and Fillet Dimensions

da (min.)	333	mm	Diameter of shaft abutment
Db (min.)	499	mm	Diameter of housing abutment
Da (min.)	470	mm	Diameter of housing abutment
Da (max.)	518	mm	Diameter of housing abutment
Sa	14	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.)	355	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.)

80.6

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)
30260	300	540	96	85	71	1770000	2100000		600	800	80.6

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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	30260