Name: China Railway Grinder Manufacturers, Suppliers and Factory - Customized Railway Grinder - Qiangli Machinery
Brand: Qiangli
SKU: 276134624

CM-4.7 II Lithium Vertical Axis Turnout Railway Grinder | Railway Maintenance Equipment

CM-4.7 II Lithium Vertical Axis Turnout Railway Grinder Overview:

The CM-4.7 II is a professional lithium battery-powered vertical axis turnout grinder designed for precise maintenance of railway turnouts, rail head grinding, weld joint finishing, and defect repairs. Its compact design allows operations in confined areas such as subways, trams, and tunnels, while maintaining high precision and reliability required by rail operators.

This machine features a DC brushless motor (4.7 kW) and a 72Ah lithium battery, capable of operating in extreme temperatures from -40°C to +70°C. Vertical and lateral feed adjustments allow precise grinding, ensuring rail safety and longevity.

Product Specification

Supporting Power	DC Brushless Motor (4.7 kW)
Battery Capacity	72Ah
Operating Temperature	-40°C ~ +70°C
Wheel Speed	3600 r/min
Grinding Wheel Feed Accuracy	0.1 mm
Vertical Feed Stroke	200 mm
Lateral Travel Stroke	385 mm
Grinding Wheel Deflection Angle	-80° ~ +30°
Grinding Wheel Size	125 x 65 x M20 mm
Overall Dimensions (L×W×H)	2126 x 1100 x 1000 mm
Machine Weight	90 kg

Machine Structure

The main components include a lithium battery, DC brushless motor, grinding wheel, and control panel. Grinding wheel feed adjustments are made via the handwheel, ensuring high precision for turnout and rail maintenance tasks. The modular structure allows easy replacement of wear parts and routine inspections.

Maintenance & Lubrication

After each shift, clean exposed linkage guide bars, transmission screws, and chains. Apply mechanical lubricant to all sliding surfaces.
Every 20 hours of operation, refill grease in all external lubrication points.

Storage Requirements

Clean exposed mechanisms after each shift. Apply lubricant to rotation, slip, and rolling parts.
Ensure storage environment is clean, dry, and away from dust, moisture, direct sunlight, or temperature fluctuations.
For long-term storage, remove battery and grinding wheel. Store the wheel in a dry, frost-free location.

Applications

Railway Turnout Maintenance: Precise grinding of turnouts, eliminating fat edges, fish-scale damage, and peeling to extend service life.
Rail Head Grinding: Restores rail profile for ordinary lines, repairs wear, scratches, and crushes, improving train smoothness.
Weld & Joint Grinding: Fine finishing of welded joints and ordinary joints, reduces wheel-rail impact noise, extends rail life.
Rail Defect Repair: Accurate local grinding of cracks, chipping, and depressions to prevent defect expansion and ensure operational safety.
Urban Rail Transit Maintenance: Suitable for subways, light rails, trams; compact, low-noise, and environmentally friendly.
Emergency Repairs: Lightweight and flexible, allows quick track access for urgent maintenance during operational windows.

Q&A

Q1: What are the payment terms?

A1: We accept T/T, L/C, D/P, WEST UNION, and CASH.

Q2: Deposit amount?

A2: Usually 30% deposit and 70% balance, negotiable for large orders.

Q3: Delivery time after deposit?

A3: Typically 5–7 days for one set after receiving the deposit, depending on quantity.

Q4: Packaging type?

A4: Standard export packing using wooden crates or cartons.

Q5: Shipping methods?

A5: By air or sea based on requirements; we assist with logistics, shipping documents, and tracking until delivery.

Q6: Is there a local user reference?

A6: Products are exported to 20+ countries; local contacts or sales agents can be provided for reference.

Q7: Machine warranty?

A7: One-year quality guarantee (wearing parts excluded).

Q8: Customization and samples?

A8: Yes, OEM/ODM customization and samples are available upon request.

Ordering & Customization

Our CM-4.7 II railway grinder supports OEM/ODM customization including motor power, battery capacity, and dimensions. MOQ, packaging, and delivery timelines are negotiable based on order quantity.

We provide standard export packaging using wooden crates or cartons, and offer flexible shipping options. Payment methods include T/T, L/C, D/P, WEST UNION, and CASH. Technical support and after-sales service are provided to ensure operational reliability.

HENAN-QIANGLI-MACHINERY-CO-LTD