CINCINNATI 350-20 RK CNC Centerless

CINCINNATI 350-20 RK SERIES
S/N 916635089-0101

SPECIFICATIONS
Grinding Wheel
Diameter maximum/minimum………………………………... 24/17 (609/431 mm)
Hole size……………………………………………………… 12 (304 mm)

Regulating Wheel
Diameter maximum/minimum……………………………….. 14/11 (355/279 mm)
Hole size….…………………………………………………… 6 (152 mm)

Machine Capacities – Standard Equipment
Work diameter……………………………………………….. 1/2 to 6 (12,7 to 152 mm)
Grinding wheel width………………………………………... 20 max. (508 mm)
Regulating wheel width……………………………………… 20 max. (508 mm)
Main drive horse power……………………………………… 50 HP (37 KW)

EQUIPMENT OPTIONS
Grinding Wheel Drive
Variable speed AC grinding wheel drive is available to grind at a constant surface speed with the DMC. Alternate, higher horsepower motors can also be furnished

SIMPLY PRODUCTIVE
The RK Series proves that outstanding precision is not out of your price range. Simple mechanical design combines with advanced features to make these machines remarkably accurate and affordable.

Cincinnati Milacron has reduced the number of parts in the RK Series by 42% while improving grinding performance. Pneumatics have been removed and most hydraulics have been replaced by smooth running electric drives. Complex computer programming has been replaced by simple state-of-the-art operator controls.

QUICK SETUP AND EASY OPERATION
One look at the RK’s standard operators station tells you a lot. Whether it’s the simplest thru feed, or our combined ONEfeed version, it is a small unit with relatively few controls. Easy to learn. Easy to set up. Easy to operate.

The heart of the system is a DMC (Dedicated Motion Controller). Its simple, direct controls give you the accuracy and consistency of servo control with the common sense operation of a manual machine.

Mechanical design of the RK Series helps keep set up easy. The grinding wheel position is fixed, rigidly mounted to the machine bed. An upper/lower slide arrangement, under the regulating wheel and work rest, swivel together with a single adjustment for quick, accurate adjustment of taper or wheel contact.

The thru feed control station provides an exceptionally simple interface for quick learning and easy operation.

PRECISION COMPONENTS
RK machines are built on an epoxy granite base, selected for its superior rigidity, vibration damping and thermal characteristics.

RK centerless slides combine anti-friction ways, brushless AC servo motors, precision ball screws and digital feed back. The results give you two-way compensation with 0.000004 (0.1 micron) resolution.

Standard RK truing units are a highly damped design. They provide electrically driven traverse and cam-type profiling.

FILMATIC grinding wheel spindle bearings with hydrostatic lift provide long lasting, hydrodynamic, self-centering support which is consistent under varying grinding loads. Rotational accuracy is 0.000004 (0.1 micron). The regulating wheel is rigidly supported at both ends by special hydrodynamic bearings.

RELIABILITY
Simple systems are easily maintained, have less potential for down-time and require fewer spare parts.

With this in mind, Milacron’s centerless experts researched our extensive library of designs, service records, run-off test results and customer reports. Incorporating such features as hydrostatic spindle lift and S curve slide acceleration to maximize ball screw life, RK machines apply the latest technology in simple, durable, precision components.

COMMONALITY AND SUPPORT
If you have Cincinnati centerless machines, you will be able to use most of your existing work support tooling on the new RK Series machines.

Specifications are deemed accurate, however, subject to verification or prior sale
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All exchange units/returns must be shipped within 30 days. All exchange units/returns must be shipped using DDP terms - Grinders Clearing House, Inc. dba GCH Machinery, is not responsible for any customs formalities or shipping costs.

If Grinders Clearing House, Inc. dba GCH Machinery does not receive exchange/core unit back within 30 days, GCH will invoice FULL replacement cost (OUTRIGHT Cost) to customer.