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CNC Machined Bearing Springs 0.001mm Accuracy 50CrVA Pressure Plate Diaphragm Spring
CNC Machined Bearing Springs 0.001mm Accuracy 50CrVA Pressure Plate Diaphragm Spring
Specifications
Place of Origin :
Sihong, China
Brand Name :
Sunzo
Certification :
CE/IATF16949/45001/14001/9001
MOQ :
Negotiable
Price :
Negotiable
Packaging Details :
Carton
Delivery Time :
Negotiable
Payment Terms :
Negotiable
Positioning accuracy :
0.001mm
Maximum RPM :
25,000 RPM
Dimensional tolerance :
IT3 grade (<0.005mm)
Thickness uniformity :
±0.003mm
Load force variance :
±2%
Load multiplication ratio :
3.2-4.5x at 0.5mm displacement
Material options :
50CrVA, SUS304
Hardness (50CrVA) :
HRC 45-50
Tensile strength :
1800MPa
Heat treatment (50CrVA) :
860°C quench, 420°C temper
Solution annealing (SUS304) :
1050°C
Dynamic stiffness :
150-300N/mm
Fatigue testing cycles :
10⁶ cycles
Preload decay :
<5%
Spindle runout :
≤2μm
Machining accuracy :
±0.001mm
Lubrication channel width :
0.8mm
Lubrication channel depth :
0.5mm
Operating temperature :
-40°C to 120°C
Almen intensity :
0.2A
Description
High Precision Bearing Disc Spring
Ultra-Precision CNC Machined Solution for High-Speed CNC Machine Tool Spindle Bearings
Our High Precision Bearing Preload Disc Spring is manufactured using 5-axis CNC machining centers with 0.001mm positioning accuracy to meet the stringent preload requirements of high-speed CNC machine tool spindle bearings (up to 25,000 RPM).
Product Series & Specifications
Available in grooved (high-speed) and grooveless (heavy-load) series, the precision machining process ensures:
  • Annular structure dimensional tolerance of IT3 grade (error <0.005mm)
  • Thickness uniformity within ±0.003mm
  • Optimized load force distribution with ±2% variance in multi-plate parallel configurations (2-8 discs)
  • Consistent load multiplication ratios (3.2-4.5x at 0.5mm displacement)
Materials & Heat Treatment
Constructed from aerospace-grade alloys with proprietary heat treatment:
  • 50CrVA (1.05Cr-0.8V-0.25Mo): Quenched at 860°C and tempered at 420°C to achieve HRC 45-50 hardness and 1800MPa tensile strength
  • SUS304 (18Cr-8Ni): Solution annealing at 1050°C for enhanced corrosion resistance
Quality Assurance
Each unit undergoes 100% inspection including:
  • Dynamic stiffness testing (150-300N/mm)
  • 10⁶ cycle fatigue testing (preload decay <5%)
  • Dimensional metrology via CMM
Application & Performance
Specifically engineered for angular contact ball bearing assemblies in precision CNC spindles (e.g., BT40/BT50 taper interfaces), this disc spring:
  • Reduces spindle runout to ≤2μm
  • Improves machining accuracy to ±0.001mm for aluminum alloys
  • Enhances thermal stability during prolonged cutting operations
  • Operates reliably within -40°C to 120°C temperature range
Design Features
  • Grooved design: 4 equally spaced lubrication channels (width 0.8mm, depth 0.5mm) to minimize friction heating at high RPM
  • Grooveless version: Shot-peened surfaces (Almen intensity 0.2A) for extended fatigue life
Compatibility
Compatible with major spindle manufacturers including DMG MORI, Haas, and Okuma. The critical preload component for high-performance CNC machining centers.
CNC Machined Bearing Springs 0.001mm Accuracy 50CrVA Pressure Plate Diaphragm Spring
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CNC Machined Bearing Springs 0.001mm Accuracy 50CrVA Pressure Plate Diaphragm Spring

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Product Detail
Place of Origin :
Sihong, China
Brand Name :
Sunzo
Certification :
CE/IATF16949/45001/14001/9001
MOQ :
Negotiable
Price :
Negotiable
Packaging Details :
Carton
Contact Supplier
CNC Machined Bearing Springs 0.001mm Accuracy 50CrVA Pressure Plate Diaphragm Spring

Jiangsu Sunzo Spring Elasticity Technology Co., Ltd

Verified Supplier
1 Years
nanjing
Since 2006
Business Type :
Manufacturer, Exporter, Seller
Main Products :
DIN 2093 Disc Spring, Single Turn Wave Spring, DIN 6796 Washer
Total Annual :
1.2M-1.4M
Employee Number :
160~200
Certification Level :
Verified Supplier
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