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SI5TK SI35TK Rod End Spherical Plain Bearing 18-80mm Outer Diameter
SI5TK SI35TK Rod End Spherical Plain Bearing 18-80mm Outer Diameter
Specifications
Brand Name :
SYX/OEM
Model Number :
SI5TK SI6TK SI8TK SI10TK SI12TK SI14T5K SI16TK SI18TK SI20TK SI22TK SI25TK SI30TK SI35TK
Certification :
IATF 16949:2016
Place of Origin :
China
MOQ :
1000
Price :
usd0.45-usd4.30/1 pc, FOB Shanghai, China
Payment Terms :
T/T
Supply Ability :
50000.00 pcs/1 month
Delivery Time :
20 work days
Packaging Details :
carton
Surface :
Zinc plated
Packing :
As customer's request
Feature :
Maintenance-free
Outerdiameter :
Varies depending on model
Sliding Contact Surfaces :
Steel / Brass
Loadtype :
Radial and Axial
Length :
Customized
Outer Diameter :
18-80mm
Oem :
Acceptable
Surface Treatment :
Environmental protection white zinc
Stock :
Great Supplying Ability
Description
SI Series Rod End Spherical Plain Bearings
SI5TK, SI6TK, SI8TK, SI10TK, SI12TK, SI14T5K, SI16TK, SI18TK, SI20TK, SI22TK, SI25TK, SI30TK, SI35TK rod end spherical plain bearings feature steel/PTFE sliding contact surfaces equivalent to GIKR...PW INA specifications.
Product Overview
The SI...TK series represents self-lubricating rod end spherical plain bearings designed for connecting linkages and transmission components in industrial automation applications.
Construction & Design
These bearings consist of three main components:
  • Inner ring (ball) - Hardened bearing steel with hard chrome-plated spherical surface
  • Self-lubricating composite liner - PTFE/copper alloy for maintenance-free operation
  • Rod end housing - Carbon steel or stainless steel with internal thread
Performance Advantages
  • Maintenance-free operation - Self-lubricating design eliminates frequent grease re-lubrication
  • High load capacity - Withstands significant radial loads and certain axial loads
  • Excellent misalignment compensation - Allows angular displacement up to ±13° to ±16°
  • Ideal for light-load, low-speed applications - Perfect for environments where maintenance is difficult or lubricant contamination is unacceptable
Technical Specifications
Category Details
Design Internally Threaded Rod End: Housing features ISO Metric Thread (model number indicates thread size)
Self-Lubricating Liner: PTFE or sintered bronze composite material
Materials & Finish Inner Ring: GCr15 bearing steel, hard chrome-plated
Outer Housing: Carbon steel (zinc-plated) or stainless steel (440C/304)
Sealing: Optional dust covers or seals available
Performance Specifications Angular Misalignment: 13° to 16° swing angle
Load Ratings: Dynamic and static ratings increase with model size (SI10TK: 14.5 kN dynamic, 18 kN static)
Operating Temperature: -30°C to +80°C standard (wider range with special materials)
Applications
SI...TK series bearings are widely used in mechanical systems requiring oscillation, rotation, or linkage:
  • Industrial Automation: Robotic arm joints, end-effector connections, conveyor belt tensioners
  • Pneumatics & Hydraulics: Cylinder piston rod connections, hydraulic cylinder clevis ends, control valve linkages
  • Automotive Industry: Throttle cables, clutch pedal linkages, steering tie rods
  • Aerospace: Flight control systems, door hinges
  • General Machinery: Packaging machines, textile machinery, printing presses, measuring instruments
  • Special Environments: Food processing machinery, medical equipment
Frequently Asked Questions
Q: What is the difference between SI...TK and SI...T/K?
SI...TK refers to maintenance-free, self-lubricating versions with composite liners. SI...T/K (or SI...ES) typically denotes versions with grease fittings for periodic re-lubrication. The "K" in TK indicates the composite liner material.
Q: What is the main advantage of the self-lubricating design?
The primary advantage is maintenance-free operation. This eliminates the need for lubrication systems, reduces contamination risk (important in food, medical, and cleanroom applications), and simplifies design and maintenance schedules.
Q: What are the limitations of SI...TK bearings?
  • Speed: Suitable for low to moderate speeds or oscillating movements only
  • Load: Not designed for very high continuous axial loads or impact loads
  • Temperature: Standard PTFE liners have lower maximum operating temperatures (~+80°C to +120°C)
Q: How do I select the right model (e.g., SI8TK, SI12TK)?
Selection is based on:
  • Thread Size: Match internal thread (M8, M10, M12) to your connecting bolt/rod
  • Load Requirements: Ensure bearing ratings exceed application loads with safety factor
  • Environmental Conditions: Choose appropriate materials and sealing options
  • Motion Type: Confirm required angular misalignment falls within specifications
Q: Can SI...TK bearings be used in underwater or high-humidity environments?
Standard carbon steel versions with zinc plating offer limited corrosion resistance. For such environments, stainless steel versions (SI..TK-2RS/SS) are strongly recommended. Verify specific corrosion resistance grades and check if seals are suitable for fluid immersion.
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SI5TK SI35TK Rod End Spherical Plain Bearing 18-80mm Outer Diameter

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Product Detail
Brand Name :
SYX/OEM
Model Number :
SI5TK SI6TK SI8TK SI10TK SI12TK SI14T5K SI16TK SI18TK SI20TK SI22TK SI25TK SI30TK SI35TK
Certification :
IATF 16949:2016
Place of Origin :
China
MOQ :
1000
Price :
usd0.45-usd4.30/1 pc, FOB Shanghai, China
Contact Supplier
SI5TK SI35TK Rod End Spherical Plain Bearing 18-80mm Outer Diameter

Shanghai Yongxing Bearing Manufacturing Co., Ltd.

Verified Supplier
1 Years
shanghai, shanghai
Since 1996
Business Type :
Manufacturer
Main Products :
Spherical Plain Bearing, Radial Spherical Plain Bearing, Rod End Ball Joint
Total Annual :
30000000-50000000
Employee Number :
150~200
Certification Level :
Verified Supplier
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