CNC Cylindrical Surface Hydraulic Grinding Machine High Speed For Automotive Crankshafts

• Machine Type: CNC high-speed face and cylindrical grinding machine (JMA-2545/2575/25100 and JMP-2545/2575/25100 variants)
• Grinding Modes: External plunge, longitudinal, step-by-step, taper, arc, and combined end face grinding
• Capacity: 470/770/1020mm center distance, 125mm center height, max workpiece weight 50/70/150kg
• Axis Performance: X/Z axes with 0.0001mm resolution, 0.001-10m/min feed speed, 7.5kW drive power
• Wheel System: Φ400~500mm wheels, 50m/s max speed, hydrostatic/hydrodynamic bearing technology
• Accuracy: Roundness 0.001~0.002mm, longitudinal consistency 0.003~0.008mm, Ra 0.10~0.32μm
• Control Options: FANUC oi, KND, or HNC CNC systems with 0.1μm resolution servo drives
• Optional Features: In-process gauging, wheel anti-collision, dynamic balancing, patented wheel assembly mechanism
• Dimension & Weight: Total machine weight 3800/4800/5800kg, integral protective enclosure
• Certification: CE & ISO 9001 certified, 1-year full machine warranty, lifelong technical support

The SDVEDON JMA(P)-25 series are high-efficiency CNC high-speed face and cylindrical grinding machines, including JMA (face and cylindrical) and JMP (external cylindrical) variants. Designed for mass production of automotive and industrial parts, they combine high productivity, accuracy, and ease of automation.

These machines feature a rigid cast iron bed with aging treatment for stability. The wheel head uses our patented hydrostatic/hydrodynamic bearing technology for ultra-high rotation accuracy and rigidity. The headstock, driven by a high-output AC servo motor, offers stepless speed control and precise positioning for grinding special-shaped parts.

With multiple grinding modes, they can handle external cylindrical, end face, taper, arc, and stepped grinding operations in automatic cycles. The machines support FANUC oi, KND, or HNC CNC systems, with optional in-process gauging and patented wheel assembly mechanism for enhanced productivity. Widely used in automotive engine and transmission parts, such as crankshafts, camshafts, and axles.

• Bed & Structure: High-quality cast iron with multiple aging treatments, low deformation, and high stability.
• Integral Protection: Compact layout with full enclosure for safety and easy maintenance.

• Wheel Head: Hydrostatic/hydrodynamic bearing design for ultra-high rotation accuracy and rigidity.
• Headstock: High-output AC servo motor with 15-750rpm stepless speed control and precise positioning.
• Tailstock: Linear bearing structure with low friction, adjustable clamping force, and foot switch control.

• Accuracy: Roundness as low as 0.001mm, longitudinal consistency down to 0.003mm, and Ra 0.10μm finish.
• Grinding Modes: 6 key modes including plunge, longitudinal, step-by-step, taper, arc, and combined end face grinding.
• Wheel Dressing: CNC-controlled diamond dresser for custom wheel profiles.

• In-Process Control: Optional outer diameter and end face gauging for closed-loop quality control.
• Protection & Safety: Wheel anti-collision, idle stroke elimination, and dynamic balancing options.
• Patented Technology: Unique wheel assembly mechanism for quick and safe wheel changes.

The machine has passed CE and ISO 9001 international quality system certification, complying with global industrial safety and quality standards. Each unit undergoes strict factory precision inspection before delivery. SDVEDON provides 1-year full machine warranty and lifelong free technical support, including installation guidance and maintenance service.

1. The machine must be installed by professional technicians in a flat, vibration-free workshop, ensuring sufficient stabilized power supply and hydraulic/pneumatic systems are available on site.
2. Before operation, strictly follow the operation manual to inspect the spindle, servo drive, lubrication system, and safety guards to guarantee normal operation.
3. Operators must receive professional training, wear necessary protective equipment, and strictly abide by safety operation rules to avoid personal injury.
4. Regular maintenance is essential: clean the machine periodically, check the wheel condition, lubricate the guideways, and inspect the CNC system to ensure long-term stable performance.
5. When performing maintenance, wheel change, or troubleshooting, please cut off the power supply first to avoid safety accidents.

Widely used in automotive, motorcycle, aerospace, and general machinery industries for precision grinding of crankshafts, camshafts, axles, gear shafts, and other small-to-medium parts. The SDVEDON JMA(P)-25 series is ideal for mass production requiring high efficiency, accuracy, and automated operation.