High Speed Ceramic Angular Contact Ball Bearing B71938-E-T-P4s-UL for CNC Spindle Motor

Product Specifications

Application Industries

Stop CNC Spindle Failures with High Speed Ceramic Angular Contact Ball Bearing B71938-E-T-P4s-UL

CNC operators know the frustration of unexpected spindle downtime—replacement bearings with inconsistent precision lead to poor surface finishes, while long lead times for specialized parts halt production schedules. When your machine tools rely on high-speed rotation, choosing the wrong bearing isn’t just a cost issue; it’s a threat to delivery deadlines and product quality.

Engineered for CNC Spindle Motors: Precision Meets Performance

The High Speed Ceramic Angular Contact Ball Bearing B71938-E-T-P4s-UL addresses these challenges directly. As a professional bearing manufacturer with decades of export experience, we supply bearings that meet ISO, ABMA, and DIN standards, ensuring compatibility with your CNC spindle motor. Our factory’s advanced testing equipment verifies each bearing’s noise grade and precision, from P0 to P4, so you can trust consistent performance right out of the box.

Where This Bearing Excels: High-Speed, High-Precision Applications

Designed for CNC spindle motors operating at extreme rotational speeds, this angular contact ball bearing with a 25-degree contact angle (E) delivers exceptional radial and axial load capacity. Its ceramic construction reduces heat generation during high-speed operation, making it ideal for continuous-duty machining centers. Whether you’re cutting metal alloys or composites, the B71938-E-T-P4s-UL maintains stability under varying loads, ensuring your spindle runs smoother and lasts longer.

Technical Details That Define CNC Spindle Performance

Three critical parameters set this bearing apart: precision class, contact angle, and material composition. The P4s precision grade guarantees minimal runout, essential for achieving tight tolerances in precision machining. The 25-degree contact angle balances axial and radial load distribution, preventing premature wear in vertical or horizontal spindle configurations. While the base material is high-grade steel, the ceramic ball design reduces friction, allowing higher limiting speeds without sacrificing durability—key for maintaining productivity in high-volume manufacturing.

Why Genuine Bearings Lower Your Total Cost of Ownership

Counterfeit bearings may offer lower upfront prices, but they often fail within months, leading to unplanned downtime and costly repairs. A single spindle failure can cost thousands in lost production. Our genuine FAG bearings, sourced through verified supply chains, come with a 12-month warranty. Each unit undergoes dimensional detection and noise testing in our in-house laboratory, ensuring compliance with international standards. By investing in authentic, precision-engineered bearings, you reduce maintenance costs and extend the service life of your CNC equipment.

Why Global Buyers Choose Saifan Bearings

Packaging & Shipping

• Secure carton pallet packaging to prevent damage during transit
• Sample orders shipped within 3-5 working days; bulk orders within 5-15 working days
• Multiple logistics options: DHL, FedEx, UPS, air freight, or sea freight
• Real-time tracking numbers provided for all shipments
• 1 piece MOQ for standard bearings, with customized order quantities negotiable

Get Your CNC Spindle Running Again—Request a Quote Today

Every day your CNC machine is down costs money. Whether you need a single replacement bearing or a bulk order for your production line, we’re ready to fulfill your request. Send us your bearing designation, application details, and quantity, and our team will respond with a competitive quote within 24 hours.

Frequently Asked Questions