CNC Machined Bearing Springs 0.001mm Accuracy 50CrVA Pressure Plate Diaphragm Spring
CNC Machined Bearing Springs 0.001mm Accuracy 50CrVA Pressure Plate Diaphragm Spring
Basic Properties
Place of Origin:
Sihong, China
Brand Name:
Sunzo
Certification:
CE/IATF16949/45001/14001/9001
Trading Properties
Minimum Order Quantity:
Negotiable
Price:
Negotiable
Payment Terms:
Negotiable
Product Summary
Ultra-precision CNC disc springs for high-speed spindles. IT3 grade tolerance, 1800MPa strength, 10⁶ cycle fatigue life. Reduces runout to ≤2μm, compatible with DMG MORI, Haas, Okuma.
Product Custom Attributes
Highlight
CNC Machined Bearing Springs
,Bearing Springs 001mm Accuracy
,50CrVA pressure plate diaphragm spring
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
Product Description
Detailed Specifications & Features
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.
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