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33x139x21mm Polycarbonate Deep Groove Ball Bearing

Expert Overview

This deep groove ball bearing, constructed from high-performance polycarbonate, offers a unique combination of low friction, chemical resistance, and lightweight design. Engineered for smooth operation in power transmission systems.

StandardASME B18
MaterialPolycarbonate
FinishGalvanized
GradeN/A
Inside Diameter33mm
Outside Diameter139mm
Width21mm

Detailed Engineering Specifications

A proven choice for industrial professionals, this 33mm inner diameter, 139mm outer diameter, and 21mm width deep groove ball bearing features a robust polycarbonate construction. This advanced polymer offers excellent corrosion resistance, a lower coefficient of friction compared to traditional steel bearings, and significantly reduced weight, making it ideal for applications where corrosion or weight are critical factors. Its design ensures efficient radial and axial load handling, providing reliable performance in conveyors, pumps, and specialized machinery.

🧊 Download 3D CAD Model (.STEP)

Verified Global OEM Partners

This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.

SKFEst. 1907
Sweden🇸🇪
"World leader in rolling bearings."
Market Rank
🏆 #1 Global Bearing Manufacturer
Industry Approvals
🚀 Formula 1 & Airbus Approved
Warranty & Support
🛡️ 24/7 Global Support
Green Manufacturing
🌱 Net Zero by 2030
Certified:ISO 14001, OHSAS 18001
TimkenEst. 1899
USA🇺🇸
"Engineered bearings and power transmission."
Market Rank
🏆 Premium Heavy Industry Leader
Industry Approvals
🚀 NASA & Military Approved
Warranty & Support
🛡️ Extended Wear Warranty
Green Manufacturing
🌱 Sustainable Steel
Certified:ISO 9001, AS9100
NSKEst. 1916
Japan🇯🇵
"Precision machinery and automotive parts."
Market Rank
🏆 Top 3 Global Bearings
Industry Approvals
🚀 Toyota & Honda OEM
Warranty & Support
🛡️ 10-Year Defect Free Guarantee
Green Manufacturing
🌱 100% Renewable Energy
Certified:ISO/TS 16949

Certifications & Compliance

RoHS Compliant:Yes
REACH Compliant:Yes
Material Traceability:Available on Request
DFARS Compliant:N/A

Installation Procedure

1. Ensure the bearing housing and shaft are clean and free from debris. 2. Carefully press or slide the bearing onto the shaft, ensuring it is seated squarely. 3. Install the bearing into the housing, applying even pressure until fully seated.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASME B18

Mechanical Properties

Tensile StrengthStandard Commercial Spec
Yield StrengthStandard Commercial Spec
HardnessVaries by specific batch

Temperature & Environment Rating

Min Operating Temp
-20°F (-29°C)
Max Continuous Temp
400°F (204°C)
Thermal Expansion
Typical for Material Class

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
StandardVaries by dimensionContact Sales

Corrosion Resistance Guide

EnvironmentRating
Indoor / DryExcellent
Outdoor / ExposedExcellent
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Applying excessive force during installation, potentially damaging the polycarbonate race.Use a bearing press or appropriate tool for a controlled, even press-fit. Avoid hammering.
Using incompatible lubricants that can degrade polycarbonate.Consult the lubricant compatibility chart for polycarbonate bearings or use food-grade, inert lubricants.

Common Applications

  • Conveyor Systems
  • Food Processing Equipment
  • Chemical Handling Machinery
  • Lightweight Robotics

⚠️ Engineering Warnings

  • Not suitable for applications exceeding the specified load limits.
  • Avoid exposure to extreme temperatures outside the operational range of polycarbonate.

Alternative Products to Consider

Premium Power Transmission equivalentHigher corrosion resistance (316 SS)
Economy Power Transmission optionLower cost for non-critical indoor applications

Frequently Asked Questions

Q: What is the Deep Groove Ball Bearing made from?

A: This Deep Groove Ball Bearing is manufactured from Polycarbonate.

Q: What are the main applications?

A: Conveyor Systems, Food Processing Equipment, Chemical Handling Machinery, Lightweight Robotics.

Technical Schematic

BALL BEARING CROSS-SECTIONISO 15 — Deep Groove Ball BearingBOREOD = 52mmd = 25mmWidth: 21mmDynamic Load: 7,870 lbsInstall with press fit — never strike inner/outer race directly

Torque Specifications

⚡ UNIT CONVERTER

Conversion factor: 1 ft-lb ≈ 1.356 Nm

Verified Compatibility

StatusMating ComponentStandardTorque SpecEngineering Notes
No verified compatibility data found for this component.