Railway Track Grinding
Carborundum Electrite has developed snagging wheels and cut-off wheels for the repair and re-grinding of railway tracks.

The main action of the snagging wheel is to eliminate surface anomalies on the surface of the rail track and for the re-grind of freshly welded track.

Electric drive grinding trains are fitted with up to 48 grinding machines and driven along the track at 4-6 mph, with a grinding force on the wheel of 100 kp.

Throughout the operation, the resinoid snagging wheels are protected with a special peripheral bandage.

Here is a typical wheel specification to suit this application.

Material	Abrasive & Grit Size
Aluminium	C 14s
Brass	C 14s
Bronze	C 14s
Cast Iron	ZF, C 14s
Ductile Iron	ZF, C 14s
Nimonic	ZF, A 24s
Steel	ZF, A 14s

Feature	Value
Dimensions	250 x 75 x 150 mm
Specification	97EA, 96A 16R-S5B
Working Speed	3600 rpm
Maximum Force on Wheel	100 kp
Speed of Grinding Carriage	1-2 m/s
Hardness of Railhead Surface	350-420 HV
Ambient Temperature Range	+30C to -40C
Depth of cut	0.20 mm
Average Service Life	6 hours
Average Gr	8-10

Please note that other products are custom made for the full range of rail track grinding machines from around the world.

High Speed Snagging Wheels
Normally, an abrasive size of 10# to 30# on wheels of 760 mm diameter can be operated at grinding speeds of 50-63 metres per second.

In order to raise the operation speed to 60-80 metres per second, mixtures of zirconia-aluminium oxide (ZF) and other specially treated grains are incorporated during manufacture of the wheel.

Such wheels are characterised but high strength and toughness, giving rise to reduced wear and tear on the wheel, and higher performance compared with conventional products.

Specification for High Speed Snagging Wheels

Feature	Value
Diameter, mm	400-600
Thickness, mm	25-100
Holes, mm	80, 127, 150, 203, 305
Grit	F12, F14, F16, F20, F24
Hardness	N, O, P, Q, R, S
Structure	2B, 3B