IBC BS30M72 Angular Contact Ball Bearing 30 × 72 × 15 mm

Ball Screw Support Bearings

Angular Contact Ball Bearing

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EX-WORKS (Incoterms 2020) Seoul, Korea — Buyer arranges freight, duties, and insurance.

Category: Angular Contact Ball Bearing
Bore: 30 mm
Outer Ø: 72 mm
Width: 15 mm

Overview

IBC BS30M72 Angular Contact Ball Bearing supports combined radial and one-direction axial load through a defined contact angle. It is a high-speed, high-precision choice for pumps, compressors, machine tools, and spindle-related positions where axial rigidity and rotational accuracy matter.

The inner and outer ring raceways are offset to create a contact angle. Single-row, double-row, or matched arrangements can be used to meet axial load direction, preload, and rigidity requirements.

Key features

Supports combined radial and one-direction axial load
High-speed and high-accuracy operation
Preload and rigidity adjustable through matched mounting
Suitable for precision rotating assemblies

Typical applications

Machine tool spindles and support shafts
Pumps and compressors
High-speed motors
Precision gearboxes and robot drives

Selection guidance

Select by contact angle, arrangement, preload, precision class, axial load direction, and operating speed.

Symbol	Value	Description
C_a	32900 N	Basic dynamic load rating, axial
C_0a	62100 N	Basic static load rating, axial
C_u	2300 N	Fatigue limit load
≈m	0.32 kg	Weight
α	60 °	Contact angle

Symbol	Value	Description
d	30 mm	Bore diameter
D	72 mm	Outside diameter
B	15 mm	Width
a	56 mm	Effective load centre
r_{1,2 min}	1 mm	Minimum chamfer dimension
r_{3,4 min}	0.6 mm	Minimum chamfer dimension, side face
d₁	55 mm	Shoulder diameter, inner ring
D₁	58 mm	Shoulder diameter, outer ring

Symbol	Value	Description
d_{a min}	39 mm	Min. shoulder diameter for mounting, inner ring
D_{b max}	64 mm	Max. shoulder diameter, sealed side

Symbol	Value	Description
F_{v L}	1550 N	Preload force — class L (light)
F_{v M}	3490 N	Preload force — class M (medium)
F_{v H}	6980 N	Preload force — class H (high)
S_{ax L}	880 N/μm	Axial stiffness — preload L
S_{ax M}	1160 N/μm	Axial stiffness — preload M
S_{ax H}	1480 N/μm	Axial stiffness — preload H
n_{F L}	6600 1/min	Limiting speed (grease) — preload L
n_{F M}	5300 1/min	Limiting speed (grease) — preload M
n_{F H}	2700 1/min	Limiting speed (grease) — preload H
M_{R L}	0.09 Nm	Frictional torque — preload L
M_{R M}	0.14 Nm	Frictional torque — preload M
M_{R H}	0.29 Nm	Frictional torque — preload H

Code	Description
Single row 60° ball screw support bearings (BS)	Product type

datasheet pdf download

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