P4 / P2 In Stock · New arrivals: 7020-C-T-P4S spindle bearings

High Speed Ceramic Angular Contact Ball Bearing B71938-E-T-P4s-UL for CNC Spindle Motor
High Speed Ceramic Angular Contact Ball Bearing B71938-E-T-P4s-UL for CNC Spindle Motor side angle
High Speed Ceramic Angular Contact Ball Bearing B71938-E-T-P4s-UL for CNC Spindle Motor cross section
High Speed Ceramic Angular Contact Ball Bearing B71938-E-T-P4s-UL for CNC Spindle Motor dimension drawing
High Speed Ceramic Angular Contact Ball Bearing B71938-E-T-P4s-UL for CNC Spindle Motor
High Speed Ceramic Angular Contact Ball Bearing B71938-E-T-P4s-UL for CNC Spindle Motor side angle
High Speed Ceramic Angular Contact Ball Bearing B71938-E-T-P4s-UL for CNC Spindle Motor cross section
High Speed Ceramic Angular Contact Ball Bearing B71938-E-T-P4s-UL for CNC Spindle Motor dimension drawing
FAG Genuine P4 Class
ISO 9001 · DIN 620
AUTHORIZED
Schaeffler
SHIPS IN
3-5 Days
RESPONSE
≤ 24H
FAG Genuine · Authorized Ceramic Bearing P4 / P2

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

Model B71938-E-T-P4s-UL ● IN STOCK

<p>Boost CNC spindle motor performance with the <strong>High Speed Ceramic Angular Contact Ball Bearing B71938-E-T-P4s-UL</strong>, engineered to deliver exceptional rotational accuracy and heat resistance for precision machining operations. This FAG spindle bearing combines a 15° contact angle with P4s precision grade to minimize vibration at high speeds, ensuring consistent workpiece quality even during extended production runs.</p><ul><li>Hybrid ceramic-steel construction reduces centrifugal force and extends service life in demanding applications</li><li>UL certification guarantees compliance with strict industrial standards, streamlining your supply chain documentation</li><li>Direct OEM supply from authorized Schaeffler distributor ensures full traceability and eliminates counterfeit risks</li></ul>

Precision Class
P4/P2
Bore Ø (d)
17 mm
Outer Ø (D)
40 mm
Dyn / Stat Load
9.8 kN / 6.55 kN
  • 100% Original FAG
  • Shockproof Packaging
  • DIN / ISO Certified
  • Engineering Support
01 / Specifications

Complete Technical
Parameter Table

All values are factory-certified per Schaeffler FAG datasheet and conform to DIN 620 / ISO 492 precision standards. Custom tolerance packages and matched sets available on request.

Dimensions

Bore (d)17 mm
Outer Ø (D)40 mm
Width (B)12 mm
Contact Angle (α)15°
Weight0.065 kg

Performance

Dynamic Load (Cr)9.8 kN
Static Load (C0r)6.55 kN
Limit Speed (Grease)22,000 rpm
Limit Speed (Oil)34,000 rpm
Runout (P4)≤ 3 µm

Material & Construction

Ring Material100Cr6 Steel
CageTB Phenolic
SealingOpen
LubricationGrease / Oil
Preload ClassLight (L)

Standards & Certification

Precision StandardDIN 620 / ISO 492
Quality SystemISO 9001
OriginSchaeffler · Germany
DocumentationCoC + Test Report
Warranty12 Months

Product Description

Boost CNC spindle motor performance with the High Speed Ceramic Angular Contact Ball Bearing B71938-E-T-P4s-UL, engineered to deliver exceptional rotational accuracy and heat resistance for precision machining operations. This FAG spindle bearing combines a 15° contact angle with P4s precision grade to minimize vibration at high speeds, ensuring consistent workpiece quality even during extended production runs.

  • Hybrid ceramic-steel construction reduces centrifugal force and extends service life in demanding applications
  • UL certification guarantees compliance with strict industrial standards, streamlining your supply chain documentation
  • Direct OEM supply from authorized Schaeffler distributor ensures full traceability and eliminates counterfeit risks

Description

Product Specifications

Parameter Details
Model NO. FAG Spindle Bearing
Precision P4, P4s, P2 (ISO)
Contact Angle (α) 15° (C), 25° (E)
Material Steel
Transport Package Carton Pallet
Trademark FAG
Origin Jiangsu China
HS Code 8482800000

Application Industries

Industry Typical Equipment
Manufacturing CNC Machine Tools, Spindle Motors
Aerospace Precision Machining Equipment
Medical Devices High-Speed Diagnostic Machinery
Automation Industrial Robotic Arms, Precision Conveyors

Eliminate CNC Spindle Downtime with B71938-E-T-P4s-UL Ceramic Angular Contact Ball Bearing

CNC machine operators know the frustration of unexpected spindle failures—when a bearing fails prematurely, production stops, deadlines slip, and repair costs mount. Gray market bearings often lack proper traceability, leading to customs clearance delays and quality disputes. Multi-tier distribution channels stretch lead times by 30–50%, making it impossible to align with tight production schedules.

Genuine FAG Spindle Bearings, In Stock and Traceable

As an official authorized Schaeffler FAG distributor, we provide the High Speed Ceramic Angular Contact Ball Bearing B71938-E-T-P4s-UL directly from the brand’s supply chain. Our ISO 9001 & DIN compliant precision testing system ensures each bearing meets P4/P2 grade standards, critical for CNC spindle motor performance. With sufficient stock of precision grades, we eliminate the delays of traditional distribution, getting your production back on track faster.

Engineered for High-Speed CNC Spindle Applications

This Steel Ceramic Hybrid Bearing excels in high-speed rotating environments like CNC spindle motors, where operating speeds demand exceptional stability and heat resistance. The 15° contact angle (E) optimizes load distribution under radial and axial forces, while the ceramic ball design reduces friction and inertia—key factors in maintaining precision at maximum RPM. Whether machining aerospace components or medical devices, this bearing delivers the consistent running accuracy required for tight tolerances.

Technical Features That Drive Performance

The P4 precision class ensures minimal radial runout and axial clearance, critical for maintaining spindle concentricity and surface finish quality. The hybrid ceramic construction combines steel rings with ceramic balls to reduce thermal expansion, allowing stable operation across a wide temperature range. The “T” suffix indicates a phenolic resin cage, which enhances lubricant retention and reduces vibration at high speeds. These features collectively extend bearing service life by up to 40% compared to standard bearings in similar applications.

Why Authenticity Matters for Your Bottom Line

Counterfeit bearings may cost less upfront, but they often fail within 30–50% of the expected service life of genuine FAG products. A single spindle failure can result in $10,000–$50,000 in downtime costs, not counting potential damage to tooling or workpieces. Our bearings come with full traceability documentation, including batch codes and compliance certificates, ensuring you avoid customs issues and quality liability disputes. Investing in authentic P4 Precision Bearings reduces total cost of ownership by minimizing unplanned maintenance and production interruptions.

Why Global Manufacturers Trust Our Supply

With over a decade serving high-end manufacturing across 40+ countries, we’ve built our reputation on four pillars: official original supply directly from Schaeffler FAG, eliminating middlemen and counterfeit risks; a dedicated precision application engineering team that provides model selection and installation guidance based on your specific working conditions; shockproof precision logistics that ensure bearings arrive in factory-fresh condition; and customized OEM solutions tailored to your production schedules. Our clients include leading CNC machine tool OEMs and aerospace manufacturers who demand consistent quality and reliability.

Packaging & Shipping

  • Original FAG packaging with batch traceability labels and outer carton pallet reinforcement
  • Stock items shipped within 3–7 business days from our Shanghai warehouse
  • Global delivery via DHL, FedEx, UPS, or air/ocean freight as required
  • Real-time tracking provided for all shipments
  • Minimum order quantity of 1 piece, supporting both emergency repairs and small-batch trials

Get Your CNC Spindle Running at Peak Performance

Every hour of spindle downtime erodes your profit margin. Whether you need a single replacement bearing or a long-term supply agreement, we’re ready to support your production needs. Send us your bearing designation, operating parameters (speed, load, temperature), and quantity—our team will confirm compatibility and deliver a quote within 24 hours.

Frequently Asked Questions

Q: Are these genuine FAG bearings?

A: Yes, we are an official authorized Schaeffler FAG distributor. Every bearing comes with brand authorization documentation and full traceability to the original manufacturing batch.

Q: How do I confirm this bearing fits my CNC spindle?

A: Provide your spindle model, operating speed, and load conditions. Our precision application engineering team will verify compatibility and provide technical guidance at no cost.

Q: What is the warranty policy?

A: All bearings are covered by FAG’s original manufacturer warranty, which includes replacement for manufacturing defects. We handle the entire warranty claim process on your behalf.

Q: What is the minimum order quantity?

A: We accept orders for 1 piece, making us ideal for emergency repairs. For OEM production, we offer discounted pricing on volume orders with dedicated inventory reservation.

Q: How long does shipping take to Europe or North America?

A: Standard air freight takes 5–7 days to major European and North American cities. Express options (DHL/UPS/FedEx) deliver in 3–4 days for urgent needs.

Q: How can I verify the authenticity of the bearing upon receipt?

A: Each bearing has laser-etched FAG markings and a unique serial number. We provide packaging with security holograms, and you can cross-verify details using Schaeffler’s official product authentication system with the documentation we supply.

Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.

02 / Applications

Compatible with
High-End Manufacturing.

Engineered for precision-critical environments where micron-level runout, thermal stability and high rotational speeds determine product quality. Trusted across Germany, Italy, the US, Japan and South Korea.

CNC Machine Tools

High-speed spindles for milling, grinding and turning centers requiring P4 runout.

SPINDLE · OEM

Wind Power Gearboxes

Heavy-duty rotor and main shaft positions demanding long service life.

GEARBOX · MW

Medical Devices

Imaging equipment, surgical robotics and diagnostic systems with quiet running needs.

CLEAN · QUIET

Semiconductor & Aerospace

Wafer handling, lithography stages, and aerospace actuators with P2 demands.

P2 · ULTRA
03 / Engineering

Technical Deep Dive.
Precision Without Compromise.

Every FAG bearing we ship has passed the full Schaeffler quality protocol -- from raw material spectrum analysis to dynamic runout verification -- backed by our shockproof handling chain that preserves micron tolerances door-to-door.

/ 01 STANDARD

DIN 620 Compliance

Full conformance to German DIN 620 dimensional and tolerance standard, with traceable measurement records on every batch.

  • ISO 492 cross-mapped
  • Bore tolerance ±0.004 mm
  • CoC included per shipment
/ 02 PRECISION

P4 / P2 Class Verification

Each bearing undergoes runout testing on calibrated rigs. P4: ≤3 µm radial runout. P2: ≤1.5 µm -- ready for ultra-precision spindles.

  • Climate-controlled QC lab
  • Vibration analysis report
  • Matched-set pairing service
/ 03 LOGISTICS

Shockproof Handling

Vibration-controlled foam cradles, climate-monitored containers and dedicated freight forwarders -- your tolerances arrive intact.

  • Sealed VCI corrosion barrier
  • Shock & humidity sensors
  • 40+ countries delivered
04 / Trust

Genuine Traceability.
Warranty Commitment.

Every unit is traceable from the Schaeffler factory through our Shanghai authorized hub to your facility. Counterfeit-free guarantee backed by a 12-month performance warranty.

Verify Authenticity

Schaeffler Authorized Channel

Direct supply contract with Schaeffler Group -- every product carries original factory packaging and certification.

Full Documentation Package

Certificate of Conformity, dimensional inspection report, runout test data, and origin declaration -- included with every shipment.

12-Month Performance Warranty

Full warranty against material defect and manufacturing fault under specified operating conditions, plus engineering support.

Shockproof Precision Logistics

Vibration-dampened cradles, VCI anti-corrosion sealing, climate-monitored containers -- protecting micron tolerances across 40+ countries.

PACKAGING

Shockproof Precision Pack

VCI corrosion-inhibitor barrier, custom-cut foam cradle, sealed FAG original box, vibration-dampening outer carton with shock indicator label.

SHIPPING

Climate-Controlled Freight

DHL / FedEx / UPS express, sea/air consolidation, EXW · FOB · CIF · DDP terms. Climate and humidity sensors monitor critical batches end-to-end.

LEAD TIME

Stock Items: 3-5 Days

In-stock P4/P2 grades dispatched within 3 business days. Custom matched sets and special tolerances: 2-4 weeks. Express priority available.

06 / FAQ

Frequently Asked.

Common technical and procurement questions. For specific applications, our engineers respond within one business day.

How do I confirm this FAG bearing is 100% genuine?

Every shipment includes Certificate of Conformity, original Schaeffler factory packaging with serial codes, and traceable documentation. As an authorized distributor, we supply only directly from the Schaeffler Group channel.

What is the difference between P4 and P2 precision class?

P4 grade: bore tolerance ±0.004 mm, runout ≤3 µm -- suitable for high-end CNC spindles. P2 grade: ±0.0025 mm bore, runout ≤1.5 µm -- used in semiconductor stages and ultra-precision aerospace applications. Both conform to DIN 620 / ISO 492.

How are bearings packed for international shipping?

VCI corrosion-inhibitor wrap, custom foam cradle, sealed FAG original box, then vibration-dampening outer carton with shock indicator label. Climate and humidity sensors are added for critical batches to ensure micron tolerances are preserved across 40+ countries.

Do you offer matched sets and custom tolerance packages?

Yes. We provide DUL / DUM / DBL matched-pair configurations, custom preload classes, and tailored tolerance bands aligned with your spindle specifications. Lead time for special configurations is typically 2-4 weeks.

What is the typical lead time and minimum order quantity?

In-stock P4/P2 items: 3-5 business days dispatch. No fixed MOQ for stock items -- single-piece orders welcome. Custom matched sets and special configurations: 2-4 weeks. Express priority shipping available globally.

Do you provide installation guidance and engineering support?

Our application engineering team provides installation procedures, lubrication selection, preload calculation, failure analysis, and on-call technical guidance throughout the product lifecycle -- included with every order.
07 / Inquire

Request a quote for
B71938-E-T-P4s-UL

Submit your specification -- quantity, target precision class, and application context. Our engineers respond within 24 hours with availability, lead time and recommended configuration.

Room 328, Building 1, No. 858 Fenggao Road,
Fengxian District, Shanghai, China
Quotation Request Form ● ≤ 24H REPLY
SECURE · NO SPAM · ENGINEER REPLY
Schaeffler Authorized Distributor ISO 9001 · DIN 620

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