OD and ID grinding on one machine, for shafts, bushes, needle valves and plungers.
The WK1420x500 grinds cylindrical and conical workpieces up to 200 mm outside diameter and 500 mm in length, with an internal spindle covering 30 to 100 mm bores. Workhead, outside wheel, internal wheel, oil pump and coolant pump are each driven by their own motor. The machine is rated at 1.5 micron roundness on outside diameters and 2.5 micron on bores, and is also available in a CNC configuration.
Who it is for: Hydraulic and pneumatic component makers, fuel system and valve manufacturers, bearing and bush producers, and tool rooms grinding punch pins and small precision shafts.
Rated roundness of 1.5 micron OD and 2.5 micron ID, with longitudinal uniformity of 5 micron OD and 8 micron ID over the full 500 mm.
Rated Ra 0.25 micron on outside diameters and Ra 0.63 micron on bores, fine enough for running and sealing surfaces.
A 14000 rpm internal spindle alongside the OD wheel head means concentricity between bore and outside is set by the machine, not by two setups.
Shallow tapers, morse fits and conical seats are ground on the machine rather than requiring a dedicated taper attachment.
Grinding the two features on separate machines stacks two setup errors. One clamping on a universal machine removes that.
After heat treatment the lathe is no longer an option. Grinding takes the stock off without softening or distorting the part.
A table that swivels from minus 5 to plus 9 degrees grinds the taper directly instead of approximating it.
Cast iron bed and table on hardened ground ways, with independently driven workhead and wheel spindles. Wheels, dressers and steadies specified for the workpiece.
Figures below are taken from the machine data sheet. Anything not documented is marked as to be confirmed rather than estimated.
| Max grinding diameter OD / ID | 200 mm / 30 to 100 mm |
|---|---|
| Max grinding length OD / ID | 500 mm |
| Centre height | 135 mm |
| Max workpiece weight | 50 kg |
| Workbench speed | 0.1 to 4 m/min |
| Grinding wheel line speed | 35 m/s |
| Max travel of workbench | 650 mm |
| Workbench rotation range | -5 to +9 degrees |
| External grinding wheel size | 400 x 50 x 203 mm |
| Inner spindle speed | 14000 rpm |
| Tailstock taper | Morse No. 4 |
| Roundness OD / ID | 1.5 / 2.5 micron |
| Uniformity of diameter in longitudinal section OD / ID | 5 / 8 micron |
| Surface roughness OD / ID | Ra 0.25 / Ra 0.63 micron |
| Motor total power | 5.625 kW |
| Machine overall dimensions (L x W x H) | 2000 x 1400 x 1600 mm |
| Machine weight | 2400 kg |
Six stages, each of them completed in our own hall in Shenzhen before the machine is crated.
The WK1420x500 is the universal machine in the range. Choose a centerless machine instead when volume and repetition matter more than flexibility.
| Model | Key Specification | Best Suited To |
|---|---|---|
| WK1420x500 | 200 mm OD, 500 mm length, OD and ID in one clamping | Mixed batches, tapers, bore and OD concentricity |
| WK22 | 1 to 150 mm clamping, CNC, 20000 rpm internal spindle | Punch pins and small precision components |
| FX-18S | 0.5 to 60 mm through feed, no clamping cycle | High volume repeat diameters |
200 mm outside diameter, 500 mm grinding length and 50 kg between centres at 135 mm centre height.
30 to 100 mm diameter, up to 500 mm deep, with the spindle running at 14000 rpm.
Yes. The CNC configuration is quoted with your choice of FANUC, SIEMENS, SYNTEC or GSK control.
The machine is rated at 1.5 micron OD and 2.5 micron ID. Real results depend on workholding, wheel condition, coolant and part rigidity, which is why we ask for the drawing before quoting.
A wheel balancing stand, a centre rest and a closed type radius dresser are the standard additions. We list them on the quote.
Yes. The table swivels from minus 5 to plus 9 degrees, and the tailstock takes a number 4 morse taper.
CNC punch and pin grinding from 1 mm up to 150 mm, internal and external.
The larger centerless machine in the range, covering 0.5 to 60 mm diameter.
A 300 x 600 mm hydraulic surface grinder for small and medium parts in tool rooms and production plants.
Tell us your supply voltage and frequency, the parts you intend to grind and the accessories you need. We reply with a configured quotation and a dated schedule.
