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VSA250755-N External Gear Four Point Contact Slewing Bearing

VSA250755-N is a external gear four point contact slewing bearing with a 25.787 in bore, 35.354 in outside diameter and 3.15 in overall assembly height. A bolted mounting arrangement and external ring gear provide the interfaces for a driven rotating assembly. Selection must consider combined loads and mounting stiffness.
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  • VSA250755-N

  • BWK

  • BWK-VSA250755-N

DESCRIPTION

Product Overview

VSA250755-N is a external gear four point contact slewing bearing with a 25.787 in bore, 35.354 in outside diameter and 3.15 in overall assembly height. A bolted mounting arrangement and external ring gear provide the interfaces for a driven rotating assembly. Selection must consider combined loads and mounting stiffness.

VSA250755-N

Technical Specifications

Model VSA250755-N
Product Type External Gear Four Point Contact Slewing Bearing
Structure Standard-section four-point contact ball arrangement with external gear
Dimension Units Inch (dimensions shown)
Series VS Series
Gear External Gear
Type Ball
Bearing Type Standard
Inside Diameter Of Inner Ring 25.787 in
Outside Diameter Of Outer Ring 35.354 in
Height Of Overall Bearing Assembly 3.15 in
External Diameter On Inner Ring 29.803 in
Height Of Inner Ring 2.795 in
Height Of Outer Ring 2.126 in
Bolt Circle In Inner Ring 27.362 in
Bolt Circle In Outer Ring 32.126 in
Size Holes In Inner Ring 0.866 in
Size Holes In Outer Ring M20
Number Holes In Inner Ring 24
Number Holes In Outer Ring 24
Gear Module 9 mm
Pitch Diameter Of Gear 34.724 in
Permissible Tooth Forces T 12397.5 lbs
Basic Dynamic Load Rating(Ca) 88875 lbf
Number Of Gear Teeth 98
Basic Dynamic Load Rating(Cr) 81000 lbf
Basic Static Load Rating(C0r) 276750 lbf
Max Gear Tooth Load Fz 18045 lbs
Basic Static Load Rating(C0a) 607500 lbf
Ring Material Options 42CrMo or 50Mn or 440C; confirm supplied grade when ordering
Ball Material Chrome Steel
Cage Material Nylon or 300 Series Stainless Steel
Seal Material NBR
RoHS Compliant
Weight 127.1 kg

Applications

Industrial rotary tables, lifting platforms and positioning equipment.

Selection and Installation

Assess axial load, radial load and overturning moment together with speed, duty cycle and mounting stiffness. Confirm the bolt circles, hole sizes, material grade, seal configuration and lubrication requirements before ordering. Use flat, adequately stiff mounting surfaces and the specified bolt-tightening procedure. Match the gear module or diametral pitch, tooth count and gear face width to the pinion, and check the permissible tooth load.

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