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VSA251055-N External Gear Four Point Contact Slewing Bearing

VSA251055-N is a external gear four point contact slewing bearing with a 37.598 in bore, 47.165 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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  • VSA251055-N

  • BWK

  • BWK-VSA251055-N

DESCRIPTION

Product Overview

VSA251055-N is a external gear four point contact slewing bearing with a 37.598 in bore, 47.165 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.

VSA251055-N

Technical Specifications

Model VSA251055-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 37.598 in
Outside Diameter Of Outer Ring 47.165 in
Height Of Overall Bearing Assembly 3.15 in
External Diameter On Inner Ring 41.614 in
Height Of Inner Ring 2.795 in
Height Of Outer Ring 2.126 in
Bolt Circle In Inner Ring 39.173 in
Bolt Circle In Outer Ring 43.937 in
Size Holes In Inner Ring 0.866 in
Size Holes In Outer Ring M20
Number Holes In Inner Ring 30
Number Holes In Outer Ring 30
Gear Module 10 mm
Pitch Diameter Of Gear 46.457 in
Permissible Tooth Forces T 13770 lbs
Basic Dynamic Load Rating(Ca) 86625 lbf
Number Of Gear Teeth 118
Basic Dynamic Load Rating(Cr) 78750 lbf
Basic Static Load Rating(C0r) 387000 lbf
Max Gear Tooth Load Fz 20025 lbs
Basic Static Load Rating(C0a) 843750 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 175 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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