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

B71904-C-T-P4s-Um FAG Super Precision Angular Contact Ball Spindle Bearing for CNC Machine Tools
B71904-C-T-P4s-Um FAG Super Precision Angular Contact Ball Spindle Bearing for CNC Machine Tools side angle
B71904-C-T-P4s-Um FAG Super Precision Angular Contact Ball Spindle Bearing for CNC Machine Tools cross section
B71904-C-T-P4s-Um FAG Super Precision Angular Contact Ball Spindle Bearing for CNC Machine Tools dimension drawing
B71904-C-T-P4s-Um FAG Super Precision Angular Contact Ball Spindle Bearing for CNC Machine Tools
B71904-C-T-P4s-Um FAG Super Precision Angular Contact Ball Spindle Bearing for CNC Machine Tools side angle
B71904-C-T-P4s-Um FAG Super Precision Angular Contact Ball Spindle Bearing for CNC Machine Tools cross section
B71904-C-T-P4s-Um FAG Super Precision Angular Contact Ball Spindle Bearing for CNC Machine Tools dimension drawing
FAG Genuine P4 Class
ISO 9001 · DIN 620
AUTHORIZED
Schaeffler
SHIPS IN
3-5 Days
RESPONSE
≤ 24H
FAG Genuine · Authorized Angular Contact Bearing P4 / P2

B71904-C-T-P4s-Um FAG Super Precision Angular Contact Ball Spindle Bearing for CNC Machine Tools

Model B71904-C-T-P4s-Um ● IN STOCK

<p>Boost your CNC machine tool's spindle performance with the <strong>FAG B71904-C-T-P4s-Um super precision angular contact ball bearing</strong>, engineered to deliver exceptional running accuracy and stability for high-speed machining operations. As an official FAG distributor, we ensure 100% traceable original supply, eliminating the risks of counterfeit products and documentation gaps that can disrupt your production schedule.</p><ul><li>P4s precision grade with 15° contact angle optimizes axial load capacity and rigidity, critical for maintaining tight tolerances in precision cutting applications</li><li>Seamless integration with your existing setup, backed by our precision application engineering team for installation guidance and performance validation</li><li>Shockproof logistics packaging ensures the bearing arrives in factory-fresh condition, ready to minimize downtime and maximize your equipment's operational lifespan</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 your CNC machine tool’s spindle performance with the FAG B71904-C-T-P4s-Um super precision angular contact ball bearing, engineered to deliver exceptional running accuracy and stability for high-speed machining operations. As an official FAG distributor, we ensure 100% traceable original supply, eliminating the risks of counterfeit products and documentation gaps that can disrupt your production schedule.

  • P4s precision grade with 15° contact angle optimizes axial load capacity and rigidity, critical for maintaining tight tolerances in precision cutting applications
  • Seamless integration with your existing setup, backed by our precision application engineering team for installation guidance and performance validation
  • Shockproof logistics packaging ensures the bearing arrives in factory-fresh condition, ready to minimize downtime and maximize your equipment’s operational lifespan

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
Machine Tools CNC machining centers, precision lathes, grinding machines
Automation Robotic arms, precision linear stages
Medical Devices Surgical equipment, diagnostic imaging systems
Aerospace Aircraft component manufacturing equipment

Stop Production Delays with Genuine FAG B71904-C-T-P4s Spindle Bearings

CNC machine operators know the frustration: unexpected spindle failures from counterfeit bearings disrupt production schedules, while multi-tier distributors struggle to deliver P4 precision bearings within critical lead times. When your lathe or machining center is down, every hour of downtime translates to lost orders and missed deadlines.

Genuine FAG Precision Bearings, In Stock for Immediate Delivery

As an official authorized Schaeffler FAG distributor, we eliminate these headaches with direct access to original FAG B71904-C-T-P4s angular contact ball bearings. Our Shanghai warehouse maintains sufficient P4/P2 grade stock, ensuring your CNC machine tool spindle gets the exact precision bearing it needs without extended wait times. Each unit comes with complete traceability documentation, eliminating customs clearance obstacles and quality disputes.

Engineered for High-Speed CNC Spindle Performance

This super precision spindle bearing excels in the demanding environment of CNC machine tools, where 15° contact angle design delivers optimal axial load capacity at high rotational speeds. Whether machining hardened steel or aluminum alloys, the bearing’s P4s precision class ensures minimal runout, maintaining tight tolerances in critical milling and turning operations. Its robust steel construction withstands the thermal and mechanical stresses of continuous production cycles.

Technical Specifications That Define Reliability

The B71904-C-T-P4s combines critical features that directly impact spindle performance: precision class P4s ensures sub-micron level geometric accuracy, essential for achieving Ra 0.8 surface finishes in precision machining. The 15° contact angle balances radial and axial load capabilities, making it ideal for horizontal spindle applications. While specific load ratings and speed limits should be verified against FAG’s official catalog for your exact operating conditions, this bearing’s design follows DIN standards for consistent performance across temperature variations.

Why Genuine FAG Bearings Reduce Total Cost of Ownership

Gray-market bearings may offer lower upfront prices, but they often lack proper material heat treatment and dimensional consistency. A single counterfeit bearing failure can cost $5,000-$15,000 in unplanned downtime for a CNC machine tool, not counting potential damage to spindle shafts or workpieces. Our ISO 9001 compliant testing ensures each FAG bearing meets DIN standards for material quality and dimensional accuracy, delivering predictable service life and reducing maintenance costs over time.

Why Global Manufacturers Trust Our FAG Supply

Our 15-year track record as an authorized FAG distributor serving 40+ countries speaks to our commitment to reliability. We provide: official original supply with full traceability from FAG’s production facilities; a dedicated precision application engineering team to assist with installation and failure analysis; shockproof logistics packaging that maintains bearing integrity during transportation; and customized OEM solutions for batch production requirements. Each order includes brand authorization certificates and precision test reports.

Packaging & Shipping

  • Original FAG packaging with serial number tracking and authenticity verification
  • Reinforced carton pallet packaging for international shipping protection
  • 3-7 business day delivery for in-stock items via DHL, FedEx, or UPS
  • Real-time logistics tracking provided upon shipment
  • Flexible order quantities with no minimum purchase requirement

Get Your CNC Spindle Back to Work

Don’t let bearing issues keep your CNC machine idle. Send us your bearing model number, spindle specifications, and required quantity today. Our team will confirm compatibility and provide a formal quotation within 24 hours, including all necessary certification documents for your quality assurance process.

Frequently Asked Questions

Q: Are these genuine FAG bearings?

A: Yes, we are an official authorized Schaeffler FAG distributor. Every bearing comes with complete traceability documentation and brand authorization certificates directly from FAG.

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

A: Provide your machine model, spindle manufacturer, or existing bearing designation. Our precision application engineering team will verify compatibility based on your operating parameters.

Q: What is your warranty policy?

A: We honor FAG’s original manufacturer warranty, covering manufacturing defects with unconditional replacement or refund.

Q: What is the minimum order quantity?

A: We accept orders for 1 unit, supporting both emergency repairs and small-batch production needs.

Q: How quickly can you ship?

A: In-stock bearings ship within 3-7 business days via your preferred courier (DHL, FedEx, UPS, or air/sea freight).

Q: How can I verify bearing authenticity?

A: Each bearing includes FAG’s original packaging with holographic labels, laser-etched part numbers, and batch codes that can be verified through Schaeffler’s official channels. We provide full traceability documentation with every order.

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
B71904-C-T-P4s-Um

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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