Large Load Ship Deck Crane Slewing Bearing

• Customization: Available
• Standard or Nonstandard: Standard
• Roller Type: Straight Raceway
• Model NO.: SF14-2
• Material: 42CrMo
• Type: External Gear
• Holding Torque: 48kn.M
• Tilting Moment Torque: 67.8kn.M
• Output Torque: 4.96kn.M
• Gear Ratio: 85:1
• Static Axial Load: 555kn.M
• Static Radial Laod: 222kn.M
• Inner Dia.: 295mm
• Outer Dia.: 420mm
• Transport Package: Standard Exporting Package
• Specification: SF14-2
• Trademark: Coresun Drive
• Origin: Changzhou
• HS Code: 8482109000
• Production Capacity: 6000PCS/Month

Product Description

Slewing Swing Bearing Heavy Duty Machinery Turntable Slewing Ring Swing Bearing

Model	SF14	Place of Origin	Changzhou,China
Brand	Coresun Drive	Type	Single Ball Ring
Material	42CrMo	Output Torque	15.6KN.m
Tilting Moment Torque	67.8KN.m	Holding Torque	48K N.m
Static Axial Rating	555KN	Static Radial Rating	222KN
Dynamic Axial Rating	114KN	Dynamic Radial Rating	100KN
Gear Ratio	85:1	Ourter Dia.	420mm

High quality and high precision rotary bearing belong to slewing bearing. They are axial and radial combined cylindrical roller bearings,including two thrust needle roller bearings and a radial cylindrical roller bearing with the combination of axial and radial preload,for the convenience of transportation and fixing, two or three symmetrical screws are fastened to the two rings in order to prevent roller and rings generating collisions which influence bearing accuracy.

Rough and finish turning by CNC lathes. Each process will be checked according to the drawings. Especially for the oil groove, ellipse, triangle, outer circle(ring) allowance, inner circle(ring) allowance, and chamfer must meet the requirements of the drawing. Well prepared for next steps.

Heat treatment will be done according to the types of row material.  Row material must ensure the hardness and heat treatment deformation are controlled within the qualified range.
 

A: Surface: Make sure that the machine is cooled in place, control the surface(plane)

bending and parallel difference(tolerance). Pickling flaw detection for the first product to see whether there is burning damage

or crack.

B: Outer diameter(ring): Control ellipse, triangle and size. When the product height is large, repeated grinding is needed .
C: Inner diameter(ring): Control ellipse, wall thickness and taper. If the product height is large, the vertical difference should meet the requirements.

D: Raceway: Due to the particularity of the product, it is necessary to grind at a fixed distance and ensure that the cooling is in place. The flaw detection of wall thickness for the sample should be qualified not less than 90%.
 

Ensure chamfer, oil groove smooth and without vibration.The temperature should be within 150 degrees to eliminate interal stress

All procedures should be processed strictly in accordance with the drawings. Special for the temperature difference during tempering; roughness and angle during raceway processing for outer&inner diameter should be 100% inspected.

Production Photo and Application





Coresun Drive makes the tilting moment torque testing to ensure the quality and safety factor on slewing bearing bearing.
Quality is the foundation of enterprise development.










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