Designation: 71814 440C Stainless Steel Bearings
Type: Super Precision Angular Contact Ball Bearings
Grade: P5/P4/P2 grade
Dimension: 70*90*10mm
Weight: 0.12kg
Elements: Si3N4 Silicon nitride ceramic balls
Feature: High Speed & & Wear and Corrosion Resistant
Application:Vacuum pumps, Medical devices, Semiconductors.
71814 440C Stainless Steel Angular Contact Ball Bearing (P4 Grade) – New Release
TKW Bearing proudly presents the 71814 440C stainless steel precision angular contact ball bearing (P4 grade), engineered for high-speed, high-precision, and mildly corrosive environments. Ideal for thin-section precision applications.
Contact angle: 15° (CD type, high rigidity) , 25° (ACD Type, high-capacity)
• Precision grade: P4 (ISO, equivalent to ABEC-7)
• Material: 440C (9Cr18Mo) stainless steel Rings/ Si3N4 Balls
• Cage: Phenolic resin / stainless steel optional
• Dynamic load rating Cr: 13.8 kN
• Static load rating Cor: 16.0 kN
• Limiting speed (grease): ≈17,000 rpm
The similar design also avaiable of 71814 as follows:
-- 71814 ACD/P4
-- 71814 ACDGA/HCP4
-- 71814 ACDGC/HCP4
-- 71814 CD/P4DBA
-- 71814 CD/P4DGB
Material & Technology Advantages
• 440C (9Cr18Mo): High-carbon chromium martensitic stainless steel,
vacuum quenched + cryogenically treated, hardness HRC 58–62. Excellent hardness, wear resistance, and moderate corrosion resistance for humid/weak acid-alkali environments.
• P4 Ultra-precision: Radial runout ≤0.001 mm, face runout ≤0.002 mm. Low noise, low vibration, high-speed stability.
• Thin-section & High Rigidity: 70×90×10 mm compact size, 15° contact angle for optimal load distribution. Strong combined radial/axial load capacity.
• Cleanroom Manufacturing: Produced in dust-free workshops with superfinishing and ultrasonic cleaning. Ideal for medical, semiconductor, and food industries. Applications
• High-speed precision spindles (CNC, engraving machines)
• Servo / VFD motors (anti-electric erosion, low noise)
• Vacuum pumps & equipment (low dust, long life)
• Medical centrifuges, dental equipment (non-magnetic, clean)
• Semiconductor & optical instruments (high accuracy, low vibration)
• Food & packaging machinery (rust-proof, easy cleaning)
Why Choose TKW 71814 440C/P4?
• ✅ New Arrival in Stock: 2026 new production, same-day shipping, samples available
• ✅ Genuine 440C: Material certificate provided, no substitution
• ✅ P4 Quality Assured: 100% inspected, test report included
• ✅ Cost-Effective: Domestic precision quality, 30%+ cost savings vs. imports
• ✅ Customization: Contact angle, preload, cage, seals available on request
