Battery Rail Profile Grinder
The grinder goes electric.
Melvelle's proven 157 rail profile grinder, now battery-driven. More power, more spindle speed and constant torque than the Yanmar diesel it replaces — with zero fumes and almost no servicing. Australian made, part of the Melvelle Electric Series.
+30%
More power
4.6 kW from the electric drive against 3.5 kW from the Yanmar diesel — more bite into the rail for a faster cut.
+39%
Higher spindle speed
4,250 rpm versus 3,050 on the diesel, so the wheel clears material faster and leaves a cleaner finish.
Constant
Torque under load
The electric motor holds its torque through the grind instead of bogging down as engine revs drop — steadier cutting, hot or finishing.
2 hrs/yr
Servicing, not 24
No engine, no oil, no fuel system. Planned servicing falls from around 24 hours a year on the diesel to about two.
The FP-157 battery grinder on track
Grinding rail head and welds out on the network, day and night — the same 157 grinder, now near-silent and fume-free. Press play for sound.
Footage filmed on the network under controlled conditions by trained operators.
Features
- ≈30% more power than the Yanmar diesel — 4.6 kW vs 3.5 kW
- ≈39% higher spindle speed — 4,250 vs 3,050 rpm
- Constant torque delivery under load
- Up to 8 grinds per battery charge — 4 hot and 4 finishing
- Zero emissions at the point of use — safe for tunnels and enclosed sites
- ≈2 hours a year servicing, down from ≈24 on the diesel
- ≈30% more power than the diesel — 4.6 kW electric vs 3.5 kW Yanmar
- ≈39% faster spindle — 4,250 rpm vs 3,050
- Constant torque under load — it doesn't bog down mid-grind
- Up to 8 grinds per battery charge — 4 hot and 4 finishing
- Zero emissions — grind tunnels, platforms and enclosed possessions
Model code — quote this in your enquiry
FP-157-BATTechnical specifications
Electric vs Yanmar diesel
- Motor power
- 4.6 kW electric (3.5 kW Yanmar diesel)
- Spindle speed
- 4,250 rpm (3,050 rpm diesel)
- Torque delivery
- Constant under load (diesel falls off with revs)
- Planned servicing
- ≈2 hrs/year (≈24 hrs/year diesel)
- Emissions
- Zero at the point of use
Power & running
- Power source
- On-board battery, brushless electric drive
- Grinds per charge
- Up to 8 — 4 hot + 4 finishing
- Series
- Melvelle Electric Series
Grinding platform
- Grinds
- Rail head and sides — weld dressing, defect removal, profile restoration
- Grinding wheel
- Fast-cut wheel for a high cutting rate
- Rail rollers
- Wide-set, for the smoothest finish
- Flange rollers
- Carry the grinder's weight when grinding the rail face
Build
- Manufacture
- Designed and built by Melvelle Equipment Corp, Newcastle NSW
- Origin
- Australian made
For Australian networks
- Zero point-of-use emissions make it suitable for tunnels, underground stations and enclosed possessions where diesel exhaust is restricted.
- Designed, built and serviced in-house in Newcastle, NSW — part of the Australian-made Melvelle Electric Series.
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