Palmary OCD-4240P
Image: palmary.com, Palmary
Key Specifications
swing over table
distance between centers
max grinding diameter
max load between centers
wheel size
wheel peripheral speed
How much does the Palmary OCD-4240P cost?
Price estimate
We do not have a price for the Palmary OCD-4240P that we can stand behind, so we show no number. Configuration, options and installation move the final price a long way: a quote is the reliable figure.
Overview
The Palmary OCD-4240P is a CNC plunge cylindrical grinder with angular wheelhead offering Ø420 mm (16.5 in) of swing and 400 mm (15.7 in) between centers. Maximum grinding diameter is Ø400 mm (15.7 in), so the envelope is as wide as it is long.
Parts that fill such an envelope have inertia, and Palmary's table reflects it. The workhead motor is 1.5 kW (2.0 hp) here, where the shorter OCD-4220P has 1.0 kW (1.3 hp). The table feed servo is 2.5 kW (3.4 hp). Work speed runs from 10 to 300 rpm.
For the grinding itself the machine relies on wheel size more than on power. Ø455 to 510 mm of diameter gives a long wheel life between changes, 50 to 80 mm of width covers a seat and shoulder together, and the motor behind it is 5.5 kW (7.4 hp). Light, wide finishing plunges are the natural cut. Peripheral speed is 33 m/s (6,496 ft/min).
Travel is 260 mm (10.2 in) on X and 818 mm (32.2 in) on Z at 10 m/min (394 ipm). The table swivels 0° to 10°. Load between centers is 150 kg (331 lb). Standard equipment includes the FANUC CNC controller, a fully enclosed splash guard, micro adjustment tailstock and X-axis linear scale. The machine weighs 4,300 kg (9,480 lb), a good deal more than the 3,600 kg (7,937 lb) of the OCD-4220P.
Full Specifications
| Parameter | Value |
|---|---|
| Swing Over Table | Ø420 mm (16.5 in) |
| Distance Between Centers | 400 mm (15.7 in) |
| Max Grinding Diameter | Ø400 mm (15.7 in) |
| Max Load Between Centers | 150 kg (331 lb) |
| Wheel Size | Ø455~510 x 50~80 x Ø127 mm |
| Wheel Peripheral Speed | 33 m/s (6,496 ft/min) |
| X Axis Rapid Traverse | 10 m/min (394 ipm) |
| X Axis Travel | 260 mm (10.2 in) |
| X Axis Min Setting Unit | 0.001 (0.0001) mm |
| Z Axis Rapid Traverse | 10 m/min (394 ipm) |
| Z Axis Travel | 818 mm (32.2 in) |
| Z Axis Min Input Increment | 0.001 (0.0001) mm |
| Table Swivel Angle | 0°~10° |
| Workhead Swivel Angle | -30°~+90° |
| Workhead Center Taper | M.T. No. 4 |
| Work Spindle Speed | 10-300 rpm |
| Max Load of Work Spindle | 35 kg (77 lb) (max. length: 150 mm) |
| Tailstock Center Taper | M.T. No. 4 |
| Tailstock Stroke | 25 mm (1.0 in) |
| Tailstock Fine Adjustment Range | ±0.03 mm (±0.0012 in) |
| Wheel Spindle Motor | 5.5 kW (7.4 hp) (6P) |
| Workhead Motor | 1.5 kW (2.0 hp) (4P) Frequency |
| Wheelhead Feed Motor | 1.2 kW (1.6 hp) |
| Table Feed Motor | 2.5 kW (3.4 hp) |
| Hydrostatic Pump Motor | 0.37 kW (0.5 hp) (4P) |
| Wheel Spindle Lubrication Pump Motor | 0.37 kW (0.5 hp) (4P) |
| Coolant Pump Motor | 0.18 kW (0.2 hp) (2P) |
| Ballscrew Lubrication | Auto lubricator (LUBE) |
| Power Requirement | 18 kVA |
| Wheel Spindle Lubrication Tank | 31 L (8.2 gal) |
| Lubrication Tank | 31 L (8.2 gal) |
| Hydraulic Tank | 31 L (8.2 gal) |
| Ballscrew Lubrication Tank | 0.7 L (0.2 gal) |
| Coolant Tank | 120 L (31.7 gal) |
| Machine Weight | 4,300 kg (9,480 lb) |
| CNC Control | FANUC CNC controller |
Specifications sourced from palmary.com — verified 2026-10-05
Strengths & Limitations
Strengths
- Ø400 mm (15.7 in) by 400 mm (15.7 in) working envelope
- 1.5 kW (2.0 hp) workhead motor and 2.5 kW (3.4 hp) table feed servo
- Large wheel, Ø455 to 510 mm, for long life between wheel changes
- 4,300 kg (9,480 lb) of mass for a compact envelope
Limitations
- 5.5 kW (7.4 hp) wheel motor limits heavy wide plunges
- Table swivel limited to 0° to 10°
- 150 kg (331 lb) between centers
- Tailstock stroke of 25 mm (1.0 in)
Best For
Frequently Asked Questions
01
It swings Ø420 mm (16.5 in) over the table, grinds up to Ø400 mm (15.7 in) and has 400 mm (15.7 in) between centers. The table strokes 818 mm (32.2 in) and the wheelhead 260 mm (10.2 in). Net weight is 4,300 kg (9,480 lb).
02
Palmary lists it under its CNC plunge grinding series with angular wheelhead. It still has a CNC Z axis with 818 mm (32.2 in) of stroke at 10 m/min (394 ipm), so the wheel can be moved between several plunge positions on one part.
03
The head swivels from -30° to +90° and takes a No. 4 Morse taper center. Speed is variable from 10 to 300 rpm on a 1.5 kW (2.0 hp) motor. The spindle alone carries 35 kg (77 lb) including the holder, at up to 150 mm of length.
04
The OCD-4280P, with 800 mm (31.5 in) between centers, a 1,308 mm (51.5 in) table stroke and a -3° to +8° table swivel, at 4,800 kg (10,582 lb). The OCD-4240P has 400 mm (15.7 in) between centers and weighs 4,300 kg (9,480 lb).
