Sealing fits that seal, because bore and outside are ground true to each other.
A spool that is round but not concentric with its bore leaks no matter how good the surface finish is.
Ra 0.25 micron on the outside diameter and Ra 0.63 micron on the bore often removes the lapping operation from the routing.
A table that swivels from minus 5 to plus 9 degrees grinds the seat angle directly instead of relying on a compromise.
Hydraulic and valve manufacturers need roundness, concentricity and surface finish held together on the same part, which means grinding both features without releasing the workpiece.
Four models from our range that most often go into this industry, with the reason on each product page.
OD and ID grinding on one machine, for shafts, bushes, needle valves and plungers.
CNC punch and pin grinding from 1 mm up to 150 mm, internal and external.
The largest table in the WUK surface grinding range, at 400 x 800 mm with 950 mm of X travel.
The larger centerless machine in the range, covering 0.5 to 60 mm diameter.
Standard machines ship in 15 to 45 working days after deposit. CNC configurations and special fixtures are quoted with their own dated schedule. All machines carry 12 months warranty.
Packing and Delivery Detail
The WK1420x500 is rated 1.5 micron roundness on outside diameters and 2.5 micron on bores. Achieved figures depend on the fixture, the wheel and the part.
Yes, that is what the universal configuration is for, and it is the only reliable way to hold concentricity between the two.
Yes, with FANUC, SIEMENS, SYNTEC or GSK control on the WK1420x500 and CNC as standard on the WK22.
Ra 0.25 micron on outside diameters and Ra 0.63 micron on bores are the rated figures for the WK1420x500.
Send a drawing or describe the part and the batch size. We come back with a model, a wheel specification and the tolerance we expect to hold.
