The X25 surface grinder has a 250 by 500 mm table and the larger X36 has a 300 by 600 table, with 550 mm and 600 mm clearance between table and spindle centreline respectively.

Craig Digweed, RK International Machine Tools’ product manager – Grinding Products, comments: “With the addition of full CNC control from Siemens, the X-Series provides, as standard grinding cycles to cover surface, criss-cross, plunge, and pitch [same pitch and same depth]. However, customers can now specify optional cycles such as stair, side, profile, and contour grinding giving them much greater control over their grinding operations.”

The X-Series provides high accuracy surface grinding at competitive pricing. Spindles are high-performance P4 units with high-precision angular contact bearings delivering runout of <2 μm. The spindle itself features an inverter giving users a choice of spindle speed to suit specific materials.

Standard features of the X-Series machines are the use of servo motors on the cross, vertical and X-axes (3-axis variant only), along with linear guideways on the cross and vertical axes and boxways on the X-axis (2-axis variant) and linear guideways for the 3-axis machines. Table speed ranges from 1 to 25 m/min, dependant on machine specification, with a cross feed of 1,100 mm/min on all machines. A table-mounted, three-piece dressing diamond is standard, and to accommodate the variety of additional grinding cycles, rotary and roller dressing devices are also available for wheel forming options.