Non-standard Slewing Bearing

TINVO specializes in the design, manufacturing, and supply of high-precision slewing rings and slewing bearings, with diameters ranging from 20mm to 10,000mm. Our products serve a wide spectrum of industrial applications, delivering reliability under demanding operational conditions.

 

Expert Custom Engineering for Non-Standard Slewing Solutions

When standard catalog bearings fall short of your specific design requirements, TINVO’s non-standard slewing bearing services provide the precision and reliability you need. We specialize in engineering bespoke slewing rings that overcome challenges related to space constraints, extreme load capacities, and harsh operating environments.

  • Beyond Standard Dimensions: Whether you need ultra-thin sections for compact machinery or large-diameter rings for heavy-duty construction, we can customize diameters, cross-sections, and mounting hole patterns to fit your exact specifications.

  • Material & Coating Flexibility: To meet specific environmental needs (such as offshore or chemical exposure), we offer a range of materials beyond standard chrome steel, including stainless steel and specialized surface coatings (zinc plating, phosphating, or painting).

  • Complex Load Management: Our engineers calculate and optimize internal geometries to handle unique combinations of axial, radial, and tilting moment loads that standard bearings cannot support.

  • Custom Gear Configurations: We provide specialized internal or external gearing, including non-standard pressure angles, modules, and hardened teeth for high-torque drive systems.

  • Collaborative Design Process: We work directly from your technical drawings or provide reverse engineering services for replacement parts of discontinued machinery.

Custom designed non-standard slewing ring for offshore crane

Common Structure

  • Single-row four point contact ball slewing bearings (1-1); 

  • Double-row ball slewing bearings (1-2);

  • Cross cylindrical roller slewing bearings (1-3);

  • Three-row cylindrical roller combined slewing bearings (1-4) 

Application

slewing bearing application

Key Product Lines

  • Slewing Bearings & Rings (20–10,000mm)
  • Large Thrust Ball Bearings
  • Custom & Non-Standard Bearings
  • Special-Shaped Bearings

Structural Types

  • Single-Row Four-Point Contact Ball
    Crossed Cylindrical Roller
  • Three-Row Cylindrical Roller
  • Double-Row Ball
    Ball & Roller Combined
  • Thin-Walled Flange
  • Large Thrust Ball

Precision Grades

  • P0, P6, P5, P4

Customization

Leave your RFQ and provide more details as in the following table. 

Not sure if you need a custom design? View our Standard Slewing Bearing catalog.

Working Condition Load Table

CategoryWorking ConditionAxial Load (KN)Radial Load (KN)Overturning Moment (KN·m)Speed (rpm)Working Time (%)
StaticMax—————
 Test—————
 ……—————
DynamicMax—————
 Test—————
 Overload—————
 ……—————

Use Parameters

ParameterOptions / UnitValue
Service Lifeh (hours)—
Installation MethodHorizontal: Seat type / Hang type / Vertical / Other—
Usage ModeContinuous / Intermittent / Swing / Other—
Rotating PartsOuter Ring / Inner Ring—
Lubrication MethodGrease / Oil / Other—
SealMain Machine Setting / Bearing Setting—
Bearing Driving Circumferential ForceN (Newton)—
Environment Condition – Humidity%—
Environment Condition – Temperature℃—
Environment Condition – Pollution——
Bearing Operating Temperature℃—
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