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Okamoto

For over 80 years, Machinist worldwide have relied on Okamoto Grinders to get the job done. Okamoto is the recognized leader in grinding technology. Addy Machinery has represented Okamoto for over 50 years.

Rock solid construction is the key to Reliability, Long term machine life, and precision grinding. The high grade Meehanite cast iron process used on Okamoto’s provide the rigidity and stability that assures you unrivaled performance.

From precise tool-room jobs to high-production runs, Okamoto has the highest-quality grinding machines in the industry.

Okamoto’s grinder line-up includes:

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IGM-2MB

Okamoto Precision Internal Grinding Machine with MDI Control, Automatic Cycle, Automatic Dressing with Dress Compensation and Wheel Wear Compensation

Rigid construction. Superb Accuracy.
Standard 5hp grinding spindle motor.
MDI Control with 8.4″ color LCD display.
User friendly control with conversational software. Teach function allows easy set-up of grinding processes.
36 program storage capacity.

IGM-15NC III & IGM-15NC III/2

Okamoto Precision NC Internal Grinding Machines. Single Spindle IGM-15NC III & Twin Spindle 15NC III/2 with Okamoto’s Conversational Programming System and FANUC 0i-TD Controller

Touch Screen functionality combined with conversational input software.
Rigid construction.
Versatile grinding capability – Straight, Taper, Faces & Multi-Step. Grind I.Ds, O.Ds and Faces in a single chucking.
AC driven table with minimum feed increments of 0.00001″.
Minimum infeed increments as fine as 0.00001″ diameter.
High-performance wheelhead with 3 programmable speeds.
Rigid workhead with 100 to 850rpm speed.
Interrupt function enable in-process dressing in auto grinding cycle.

Learn More on IGM-15NC
Learn More on IGM-15NC III/2

OGM-8-20UDX

Precision Cylindrical Grinding Machine. Two Axis Fully Automatic Grinding with Rough/Fine Grinding and Spark-Out in Automatic Cycle

Reliable, high accuracy performance.
Versatile – standard ID grinding attachment expands grinding capability.
Heavily ribbed Meehanite cast construction
AC Servo/Ballscrew Table
Ergonomically designed.

OGM-III MDI Grinders

Precision Cylindrical Grinding Machine with Okamoto- Fanuc 0iTD control, automatic cycle, capable of grinding up to (10) diameters in a single set-up, including automatic dressing with dress compensation. Optional shoulder locator for accurately grinding shoulders. Optional Marposs Inprocess Gauge System also available.
Grind up to 10 different diameters in all cycles in any order all in a single setup!

Super rigid design and construction featuring T-shaped main casting and fully supported table.
Double V slideways ensure exceptional straightness.
Extremely rigid spindle utilizes precision angular bearings.

OGM-NC III Series

Precision CNC cylindrical grinding machines with Fanuc 0iTD control, Okamoto/ Fanuc conversational software, automatic cycle, capable of grinding (10) diameters in a single set-up, including auto-dressing with dress and wheel wear compensation. Standard Marposs shoulder flagging device, Optional Marposs Inprocess Gauge System

New Fanuc OiTD Control
Touch Screen functionality combined with conversational input software.
Grind up to 10 different diameters in all cycles in any order all in a single setup!
Super rigid design and construction featuring T-shaped main casting and fully supported table.
Double V slideways ensure exceptional straightness.
Extremely rigid spindle utilizes precision angular bearings.

UGM-5V CNC Series

The UGM-5V Universal Grinder is ideal for high-precision grinding of large components. Robust design & construction and a powerful spindle motor easily process large, tough-to-grind parts. The added capability of angular grinding and an available automatic tool changer further enhance grinding capability and productivity.

Angular, Internal, Cylindrical and Shoulder Grinding capability in a single set-up
Superb design and construction delivers extreme roundness accuracies of 0.9 micrometers
Single workpiece chucking optimizes straightness and cylindricity accuracies
Compact design saves valuable floor space
Standard rotary dresser
Automatic wheelhead swivel standard
Automatic Wheel Changer available

PRG-DX Series MDI Control Rotary Surface Grinder

PRG-DX grinders are highly productive by design. The wheelhead only needs to travel half of the rotary table diameter for full contact grinding. It’s ideal for single or multiple workpiece grinding. They’re perfect for high production precision work.

Rigid heavy Meehanite cast construction. Superb Accuracy.
Powerful 10hp grinding spindle motor stands up to continuous production grinding.
No table overhang assures optimum accuracy.
Easy-to-use MDI Control.
Ergonomically designed for optimum operator convenience.
Versatile table swivel +/-5 degrees.

PRG-DXNC Series CNC Control Rotary Surface Grinders

Their design makes them productive. Okamoto technology makes them easy-use. 2-Axis simultaneous CNC control expands grinding flexibility. Ideal for single or multiple workpiece grinding. They’re perfect for high production precision work.

Rigid heavy Meehanite cast construction. Superb Accuracy.
Multi-step grinding – grind up to 4 steps in a single set-up.
Graphic conversational input simplifies programming.
Powerful 10hp grinding spindle motor.
No table overhang assures optimum accuracy.
Ergonomically designed for optimum operator convenience.
Versatile table swivel +/-5 degrees.

Linear B Series Manual Feed Surface Grinders

Look in any shop and you’re likely to see one of these grinders at work. Rigid design and solid construction makes these machines the standard in manual feed surface grinders.

Rigid design and Meehanite cast construction.
Smooth table movement through reliable belt drive.
Conveniently located, ergonomically designed handwheels optimize operator comfort and control.
Proven gravity feed lubrication.

ACC-SA Series Saddle Type Surface Grinder

The ACC-12•24 is a next generation automatic type surface grinder that provides the reliability and simplicity of electronic control while still providing “hands-on” operation. It incorporates the proven design and construction features that have made Okamoto automatic surface grinders the preferred choice for users worldwide.

Highly rigid construction with wide frame that eliminates table overhang.
Double Vee table slides.
User-friendly MDI Control set-up. Touch Pad Control for Cross and Vertical Rapid Feeds.
Teach Function for Crossfeed Position.
Micro Feeder standard. High-accuracy flat and form grinding with programmable dressing and dress compensation.
AC driven vertical feed with minimum increment of 0.00005″. Manual Pulse Generator also built into control.
All functions integrated into control.

ACC-DX Series Saddle Type Surface Grinder

ACC-DX Series Grinders are one of the most widely used grinders in existence. They are easy to operate and deliver consistent performance, accuracy and reliability unmatched by any grinder in their class. They are loaded with many standard features that make them the value leader in automatic surface grinders.

8″ x 20″ to 20″ x 40″
Rigid, double-walled column construction.
Solid state ergonomically design control.
Full width tables eliminate overhang.
High precision wheel spindles with super-precision, pre-loaded bearings.
Super-smooth table movement.
Rapid Vertical Feed.
Servo driven vertical feed.

ACC-6-18DX Series Saddle Type Surface Grinders

The perfect smaller capacity hydraulic surface grinder. Rugged base and column construction assures rigidity and stability for coarse and fine grinding needs.
Extended saddle longitudinal ways reduce overhang for prolonged machine life and accuracy.

Hand scraped double vee table ways.
Vertical feed is switchable – coarse and fine.
Reliable Gravity Feed Lubrication System.

ACC-8-18NC Form Grinder

The ACC-8-18NC Form Grinder deliver the benefits of a full-function CNC surface grinder at a fraction of the price. It’s loaded with performance features and the powerful control affords you a full array of grinding capabilities.

Superb construction with heavily ribbed Meehanite cast construction.
Full contact Double Vee for true tracking and unrivaled accuracy.
User-friendly “Touch & Teach” conversational programming simplifies set-up and operation even for operators unfamiliar with CNC.
Ideal for Surface, Slot, Step, Form and Contour Grinding.
Set up to 4 different table stroke positions. Ideal for multiple workpiece grinding.
3-point diamond dresser includes one 2-point angle dresser for form dressing and one 1-point dresser for straight dressing.

UPZ-8-20Li CNC High Precision Form Grinding Machine

Reach a new level of accuracy with the UPZ-Li Ultra-High Precision Form Grinder. Rigid design & construction and premium grade components throughout assure long-lasting high-precision performance and grinding flexibility on even the most complex components.

Rigid Traveling Column Type Construction
Digital Scale Feedback System for Vertical and Cross Movement
Linear Motor Longitudinal Table Drive delivers High Speed Stroke
Precise Positioning and Slit Grinding Capability
Multi-Positioning Capability ideal for Small Lot Varied Item Production
FANUC 0-iMF 3-axes, Simultaneous 2-axes
Half-Table-Enclosed Splashguard standard
Standard 3 Point Dresser with Rotary Dresser Available as Optional

ACC-DXNC Series CNC Saddle Type Surface Grinders

ACC-DXNC grinders are specifically designed and built for high precision 2-axis simultaneous applications. Rigid design and construction, powerful software capabilities and long-term reliability makes them the preferred choice for high-accuracy and high production grinding applications.

8″ x 20″ to 16″ x 24″
Double-walled column construction.
User-friendly conversational programming.
Grinding patterns – choose plunge, bias feed or step feed – then select one of 6 versatile grinding patterns.
High-accuracy flat and form grinding with programmable dressing and dress compensation.
Input increments as fine as 0.00001″.
Servo driven vertical feed.

ACC-DX Series Column Type Surface Grinders

ACC-DX column type grinders are specifically designed and built to deliver rugged performance, superb accuracy and long term dependability at an affordable price. They utilize Okamoto’s exclusive control system that simplifies grinding of large components.

20″ x 48″ to 32″ x 120″
Heavy-Duty design and construction features fully supported table and high rigidity traveling column.
Vee and Flat table ways assure true tracking and greater table load support. Simple operation. Coarse Grinding, Fine Grinding, Spark-out and Tablr Stop are all displayed on the machine’s digital display.
Infeed increments as fine as 0.00005″.
Servo driven vertical feed.

ACC-CA Series Column Type Surface Grinders

These high-technology surface grinders feature super-rigid column feed design and construction to precisely grind large size components. They utilize Okamoto’s exclusive iQ touch-control data input to deliver a new degree in simplicity, accuracy and performance.

16″ x 24″ to 24″ x 40″
Extended saddle longitudinal ways reduce overhang for prolonged machine life and accuracy.
Exclusive iQ Touch Screen Control with easy-to-use software
Super Rigid Design with T-shaped main casting and fully supported table
Traveling Column Design provides easier access to work envelope
Double V Slideways ensure exceptional straightness
0.00001, 0.0001, 0.001 inch manual vertical feed
16″ Grinding Wheel with 10hp spindle motor
Independent Hydraulic Coolant Tank

ACC-DXNC Series CNC Column Type Surface Grinders

ACC-DXNC column type grinders are specifically designed and built for high precision 2-axis simultaneous grinding of large components. Rigid design and construction, powerful software capabilities and long-term reliability makes them the preferred choice for high-accuracy and high production grinding applications.

Heavy-Duty design and construction features fully supported table and high rigidity traveling column.
Vee and Flat table ways assure true tracking and greater table load support.User-friendly conversational programming.
Choice of versatile grinding patterns – choose plunge, bias feed or step feed – then select one of 6 versatile grinding patterns.
High-accuracy flat and form grinding with programmable dressing and dress compensation.
Input increments as fine as 0.00001″.
Servo driven vertical feed.

ACC-CHiQ Series Double Column Type Surface Grinders

ACC-CHiQ Series are versatile. They deliver the high-accuracy required progressive dies yet provide the high-efficiency required by the die base processing industry.

32″ x 80″ to 32″ x 140″
Heavy-Duty design and construction, yet an extremely small footprint.
Easy-to-use Okamoto iQ Touch Screen Control.
30hp spindle motor delivers almost 3 times the power as conventional column type machines.
Vee and Flat table ways assure true tracking and greater table load support.
Shift-Plunge Cycle optimizes reduces processing times.

ACC-CHNC Series Fixed Crossrail Double Column Type Surface Grinders

CHNC Series grinders provide large grinding capacity with width capability up to 80″. Their robust design and construction assures long-term precision and dependability when processing large components. Versatile grinding cycles boost productivity.

41″ x 59″ to 78″ x 118″
Heavy-Duty double column design and construction.
Rigid fixed crossrail design
High precision – Double Vee Guideways
Fully automatic versatile grinding and dressing cycles.
CNC controlled with Conversational Input
Space saving design

DCG Series Double Column Type Surface Grinders

DCG Series grinders deliver the grinding versatility and capacity to precisely grind extremely large components. Dual grinding wheels provide for a wide range of grinding applications to minimize large work set-up.

52″ x 158″ to 78″ x 394″
Heavy-Duty double column design and construction.
Versatile – two grinding wheels allow grinding of compound guideways and surfaces.
CNC controlled Universal Spindle
0.00001″ Infeed capability
Fully automatic grinding and dressing cycles.

YT-300 Series Rapid Lap Polisher

Rapid Lap dramatically shortens cycle-time for final polishing. Its unique lapping medium is a perfect balance of moisture and abrasive particulates – including diamond particles. Using a hurling device combined with air pressure, RapidLap’s exclusive multi-cone lapping projects the abrasive lapping media in multiple high-speed passes to polish even the most irregular shapes to a mirror-sheen finish.

Uniform mirror finishing avoids misshaping and minimizes surface marring to safely polish even the most intricate parts.
Enhances durability and prolongs the lifespan of molds and dies (especially cold forging).
Improved PVD/CVD Coating.
User-friendly control system, straightforward design and operation, and easy maintenance requirements enable operators to master the Rapid Lap with minimal training.
Low running cost – the abrasive particulate solutions can be used over and over for long periods.
Environmentally friendly operation – Rapid Lap machines are quiet and produce little to no waste, minimizing discharges of oil and dust for disposal.
Machine is supplied with all the media and accessories – no hidden costs.