Grinding spindle DYFJM-130(075)40-YFM59

belt-drivenhydrostaticISO

Introduction
This hydrostatic grinding spindle features a Φ130 mm installation outside diameter and a Φ75 mm journal. With a body weight of approximately 50 ±2 kg, it is designed for cylindrical grinding machines with constrained installation space. The spindle uses a belt drive to reach up to 4,000 rpm while maintaining hydrostatic support for stable, high-precision grinding.

Key data
Installation outside diameter: Φ130 mm
Journal diameter: Φ75 mm
Rated speed: 3600 rpm — Maximum speed: 4000 rpm
Weight: 50 ±2 kg

Technical data
Installation outside diameter (mm): Φ130
Journal diameter (mm): Φ75
Drive oil type: ISO VG3
Oil supply pressure (MPa): 2.0-4.0
Axial static stiffness (N/μm): ≥150
Radial static stiffness (N/μm): ≥120
Front-end radial runout (mm): ≤0.001
Axial end movement (mm): ≤0.001
Rotation precision (mm): ≤0.0003
Drive type: Belt drive
Rotation direction: Clockwise
Rated speed (rpm): 3600
Maximum speed (rpm): 4000
Application: For cylindrical grinding machines
Weight (kg): 50 ±2

Features / Technical specifications

• Model: DYFJM-130(075)40-YFM59
• Installation outside diameter: Φ130 mm
• Journal diameter: Φ75 mm
• Recommended drive oil: ISO VG3
• Oil supply pressure: 2.0–4.0 MPa
• Axial static stiffness: ≥150 N/μm
• Radial static stiffness: ≥120 N/μm
• Front-end radial runout: ≤0.001 mm
• Axial end movement: ≤0.001 mm
• Rotation precision: ≤0.0003 mm
• Drive type: Belt drive
• Rotation direction: Clockwise
• Rated speed: 3600 rpm
• Maximum speed: 4000 rpm
• Typical application: Cylindrical grinding machines
• Weight: 50 ±2 kg