OGM 820UDXB

The Okamoto OGM 820UDXB combines precision OD cylindrical grinding with standard internal grinding capability. Its rigid machine structure, servo-driven table, and automatic grinding cycle support accurate, repeatable processing for toolroom and production applications. With ID grinding included as standard, manufacturers can handle a broader range of cylindrical components on one machine.

OGM 820UDXB Features:

Precision OD cylindrical grinding for toolroom and production applications
Standard ID grinding attachment for expanded processing capability
Automatic grinding cycle for repeatable operation
Heavily ribbed Meehanite cast construction
AC servo-driven ballscrew table
Maximum grinding diameter of 7.87 in.
19.84 in. distance between centers
8.6 in. swing over table
Workhead spindle speeds of 150 / 250 / 400 rpm
2 hp grinding spindle
Compact 113 × 74 × 62 in. machine footprint

Max Table Travel	26.58"
Maximum Part Diameter	7.87"

Description

Precision OD Grinding for Toolroom and Production Applications

The Okamoto OGM 820UDXB is an OD cylindrical grinder built for precision toolroom work and demanding production environments. Heavily ribbed Meehanite cast construction provides the rigidity needed to control vibration during grinding. The machine combines this stable foundation with an AC servo-driven ballscrew table for smooth movement and precise positioning. These features support consistent dimensional accuracy and surface finish across individual parts and repeated production runs.

ID and OD Grinding on One Machine

A standard ID grinding attachment expands the OGM 820UDXB beyond external cylindrical grinding. Manufacturers can use the machine for both ID and OD grinding applications without investing in separate equipment for each process. The standard configuration also includes a tailstock, automatic grinding cycle, and diamond dressing device. This combination gives job shops and production facilities greater flexibility when processing shafts, tooling, and other precision cylindrical components.

Automatic Grinding with Controlled Table Movement

The OGM 820UDXB uses automatic control to support repeatable grinding while maintaining straightforward machine operation. Its AC servo-driven ballscrew table provides controlled positioning throughout the grinding process. An ergonomic machine layout improves operator access during setup and production. Together, these capabilities make the Okamoto grinder a practical choice for manufacturers requiring precision cylindrical grinding without moving into a more complex CNC platform.

Standard Accessories

ID Grinding Attachment
Grinding Wheel with Adapter
Tailstock
Automatic Grinding Cycle
Dressing Device with Diamond
Semi-Enclosed Splash Cover
Leveling Bolts and Plates
Tools and Tool Box
Installation

Optional Accessories

Frequency Inverter for Spindle Motor
Additional Grinding Wheel Adapter
Wheel Balancing Stand with Arbor
18,000 and 25,000 rpm ID Spindles
Variety of Coolant Tanks
Coolant Temperature Controller
Scroll Chuck with Adapter Plate
Collet Chuck
Work Rest
Steady Rest
Driving Dog Set
Dial Indicator for Table Swivel
Fully Enclosed Cover
Auto Door Interlock
Metric Conversion Kit

Additional Information

Max Table Travel	26.58"
Maximum Part Diameter	7.87"

Specifications

OGM-UDX Specifications

Swing over Table: 8.6″ (218 mm)
Distance Between Centers: 20″ (508 mm)
Maximum Diameter to be Ground: 7.87″ (199 mm)
Wheelhead Swing Angle: ±30°
Grinding Spindle: 2 hp (1.5 kW)
Wheel Size (D × W × B): 12″ × 1″ × 5″ (305 × 25 × 127 mm)

Okamoto OGM 820UDXB Capabilities, Applications & Regional Support

For shops evaluating straightforward precision OD grinding for recurring shaft and cylindrical work, the Okamoto OGM 820UDXB provides a automatic-control cylindrical grinder platform. The application should be sized from the finished feature requirements first, then checked against wheel reach, stock removal, dressing, coolant, and workholding constraints. As an authorized Okamoto distributor, A.W. Miller supports manufacturers across New York, Pennsylvania, Maryland, Delaware, Southern New Jersey, and Quebec with machine selection, process engineering, installation, training, and factory-certified service.

Process development on the OGM 820UDXB should account for how the wheel changes from roughing through finishing. Stock distribution, dress compensation, spark-out, thermal stability, workholding stiffness, and measurement strategy all affect whether the required geometry can be repeated in production.

Applications

Parts and processes commonly evaluated for the Okamoto OGM 820UDXB include:

shafts
pins
rollers
bearing journals

Why Manufacturers Choose the Okamoto OGM 820UDXB

Automatic Cylindrical Cycles

The OGM 820UDXB provides an automatic-control alternative for conventional OD grinding where repeatable cycle execution is the primary requirement.

Production-Oriented Simplicity

Its role in the OGM family is centered on dependable cylindrical grinding without the broader CNC process complexity of the NCIII platforms.

Conventional Shaft Workholding

Centers, chucking, tailstock support, and appropriate rests can be selected around the geometry and stiffness of the component.

Process-Driven Accuracy

Wheel condition, work support, coolant, stock allowance, and spark-out strategy remain central to size, roundness, and finish on recurring OD work.

Where does the OGM 820UDXB fit in the Okamoto cylindrical lineup?

What work is a good fit for the OGM 820UDXB?

What determines whether a shaft needs additional support?

How should wheel selection be approached for the OGM 820UDXB?

When should a shop move from an automatic grinder to a CNC OGM model?

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