1001 N Ridge Ave, Lombard, IL 60148

Precision Centerless
Grinding — Built
in Illinois

Manufacturers of new CNC centerless grinders and leaders in remanufacturing precision, OD, and special-purpose grinders since 2003. Tolerances down to 0.1 µm resolution.

0.1µm
Resolution
0.25µm
Repeatability
40+
Years Legacy
CNC
Touchscreen

Products & CNC Accessories

RSS No. 2 CNC Grinder
Our flagship workhorse. Handles infeed & thrufeed for straight, tapered, formed, or multi-diameter parts. Scales from small batches to full production runs.
Bearing typeHydro shoe ×5
Spindle mountDirect to base
CNC optionsFull line
Cincinnati CNC — Rebuilt
Fully remanufactured Cincinnati-style grinders, rebuilt to original or tighter specs and retrofitted with modern CNC controls and servo systems.
ConditionLike-new
CNC retrofitAvailable
StyleCincinnati
New #340-20 CNC
Larger-capacity CNC centerless grinder for demanding, high-throughput production environments requiring more grinding wheel width and power.
TypeProduction
ControlFull CNC
CapacityHigher range
CNC Servo Infeed
Low cycle times with exacting tolerances. Touchscreen interface — no prior CNC experience needed. Unlimited part programs stored on HDD.
Resolution0.000004" (0.1µm)
Repeatability0.0001" (0.25µm)
MotorAC Brushless Servo
DriveZero-backlash ball screw
Two-Axis CNC Profile Dresser
Dress any profile into grinding or regulating wheels. No G-code knowledge required — pendant-mounted touchscreen right at the machine.
Axes2 servo motors
InterpolationLinear & circular
ProfilesUnlimited stored
InterfaceColor touchscreen
CNC Reg Wheel Drive
Closed-loop servo control for precise RPM on the regulating wheel. Instant switchover between dress speed and grind speed.
ControlClosed-loop servo
Speed switchInstant
CompatibilityNew or rebuilt
Diamond Roll Dresser
High-precision diamond roll dressing for consistent wheel profiles across long production runs. Compatible with new and remanufactured machines.
TypeDiamond roll
Run stabilityLong production
MountNew or rebuilt
Pneumatic Infeed
Reliable pneumatic infeed for automated or semi-automated loading setups. Cost-effective for operations where extreme cycle-time precision isn't required.
ActuationPneumatic
Use caseSemi-auto loading
Loaders & Automation
Custom automated loading systems, PLC programming, robotics integration, and test automation rigs for complete turnkey grinding cells.
PLCProgram & maintain
RoboticsIntegration
DeliveryTurnkey cells

Current Inventory

RSS maintains a rotating inventory of used and new grinders — both rebuilt Cincinnati-style machines and new RSS No. 2 units ready for immediate delivery or further CNC customization.

Remanufactured units available New No. 2 CNC in stock CNC retrofit options
Contact About Inventory

Remanufacturing & Rebuild Services

What We Rebuild

RSS remanufactures all major centerless grinder types to like-new or better-than-new condition — often adding modern CNC capabilities the original machine never had.

Precision centerless Cincinnati-style OD grinders Angle-head grinders Special-purpose

CNC Retrofit Value

An existing mechanical grinder can enter the CNC era at a fraction of new-machine cost. RSS fits servo infeed, CNC profile dressers, regulating wheel drives, and touchscreen interfaces onto any rebuilt machine — delivering modern tolerances and productivity immediately.

The Rebuild Process — click each step

Disassembly & inspection

The machine is fully stripped and every component inspected for wear, damage, and dimensional accuracy. A detailed condition report is produced before any work begins.

Machining & reconditioning

Worn ways, spindle bores, and structural surfaces are re-machined and reground to original or tighter tolerances. Castings are cleaned, repaired, and repainted.

Component replacement

All worn or degraded components — bearings, seals, hydraulics, electrics — are replaced with new parts. CNC and servo upgrades are integrated at this stage.

Assembly & alignment

The machine is reassembled to exacting alignment specs. Spindle geometry, wheel centerline, and work-rest blade angles are precisely set and verified by measurement.

Test grinding & certification

Production test parts are ground to verify tolerances and surface finish meet or exceed original factory specifications before the machine ships to the customer.

Automation Consulting

Beyond grinding machines, RSS provides broader automation engineering services — from PLC commissioning to full robotic cell design.

PLC programming & maintenance
Custom software development
Robotics integration
Test automation rigs
Grinding cell turnkey
Process optimization
Contact us about automation services