OEM ODM Precision Thrust Ball Bearing 51136 51138 51140 51142 for Grinder with P0-P4 Precision

Product Specifications

Application Industries

Eliminate Grinder Downtime with Precision Thrust Ball Bearings 51136-51142

Grinder operators know the frustration of unexpected shutdowns—worn bearings cause chatter marks, reduce workpiece precision, and cut production hours. Sourcing reliable thrust bearings with tight tolerances often means long lead times or minimum order quantities that tie up capital. When replacement parts arrive late, every hour of downtime eats into profits.

Precision Thrust Ball Bearings for Grinders, In Stock Now

Our Thrust Ball Bearing 51136, 51138, 51140, and 51142 models solve these challenges with P0-P4 precision ratings and Z1V1-Z3V3 noise control—critical for maintaining grinder stability. As an integrated manufacturer with ISO9001 certification, we keep standard sizes in stock for immediate shipment, supporting both emergency repairs and scheduled maintenance. The separated design allows easy installation, minimizing machine downtime during replacement.

Engineered for Grinder Axial Loads and High-Speed Rotation

Grinders demand bearings that handle pure axial loads while maintaining precise alignment. These single-row thrust bearings feature a 0° contact angle and bearing steel construction, optimized for the continuous, high-speed rotation of grinding spindles. Whether used in surface grinders or cylindrical grinders, they deliver consistent performance under the heavy loads and rapid deceleration cycles common in metalworking applications.

Technical Details That Ensure Grinder Performance

Precision rating directly impacts grinder accuracy—P4 class bearings reduce runout to 3-5μm, eliminating vibration-induced surface defects. Vibration grades Z2V2 and Z3V3 further stabilize operation, crucial for achieving Ra 0.8μm or better surface finishes. The separated design simplifies mounting, allowing quick disassembly for maintenance without removing adjacent components. With grease or oil lubrication options, these bearings adapt to both standard and high-temperature grinder environments.

Why Cutting Corners on Bearings Costs More in the Long Run

Low-quality thrust bearings may save upfront costs but fail prematurely under grinder loads, leading to rework, scrap, and unplanned downtime. A single bearing failure can cost thousands in lost production—far exceeding the price difference between standard and precision-grade components. Our ISO9001-certified manufacturing ensures each bearing meets material and dimensional standards, backed by a 12-month warranty that covers defects and performance issues.

Why Grinder Manufacturers Trust Saifan Bearings

Packaging & Shipping

• Carton pallet packaging with protective inner wrapping to prevent damage during transit
• 3-5 day sample lead time for custom specifications
• 5-15 day bulk delivery for standard models in stock
• Global shipping via T/T, credit card, or Alibaba trade terms
• 1 piece MOQ for standard items, ideal for emergency repairs

Get Your Grinder Back to Work—Order Today

Don’t let bearing issues slow your production. Send us your grinder model, required bearing size (51136, 51138, 51140, or 51142), and quantity, and we’ll provide a quote within 24 hours. With in-stock availability and fast shipping, we’ll help you minimize downtime and maintain precision grinding performance.

Frequently Asked Questions