Johnford DMC-4100P
Image: johnford.com.tw, Johnford
Key Specifications
Spindle Taper
Tool Capacity
Table Size
Spindle Power
distance between columns
x axis travel
How much does the Johnford DMC-4100P cost?
Price estimate
We do not have a price for the Johnford DMC-4100P 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
With a table of 4,200 x 2,050 mm (165.3 x 80.7 in), the Johnford DMC-4100P offers the largest clamping surface of any fixed-column Johnford machine below the Large DMC group. Travels are 4,100 mm (161.4 in) in X, 2,300 mm (90.5 in) in Y and 800 mm (31.5 in) in Z. The spindle is the 40-taper unit.
Why put a 40-taper spindle over so much table? Because a lot of large work is surface work. Aircraft skin tooling, composite lay-up moulds, large aluminium plates and patterns are machined with small cutters at speed, and they need area more than torque. The DMC-4100P lists an 18.5 / 23 kW (24.8 / 30.8 hp) built-in spindle with HSK A63 at 15,000, 18,000 or 20,000 rpm for that, next to the standard 8,000 rpm geared drive of 7.5 / 11 kW (10.1 / 14.8 hp).
The table is rated 13,000 kg (28,600 lb). That is more than the 10,000 kg (22,000 lb) of the DMC-3100P and of the DMC-4100S, which has the same X travel on a table 1,500 mm wide.
It is a big installation at 11,290 x 5,580 x 3,960 mm (444.5 x 220 x 156 in) and 42,200 kg (92,840 lb). The enclosure is a full one as standard. Feed and rapid rates are unremarkable, 10,000 mm/min (394 ipm) and 12 m/min (472 ipm), so finishing a surface this size is a long cycle, and the optional thermal compensation system on the spindle and linear scales are worth pricing for it.
Full Specifications
| Parameter | Value |
|---|---|
| Distance Between Columns | 2,400 mm (94.4 in) |
| Table Size | 4,200 x 2,050 mm (165.3 x 80.7 in) |
| X Axis Travel | 4,100 mm (161.4 in) |
| Y Axis Travel | 2,300 mm (90.5 in) |
| Z Axis Travel | 800 mm (31.5 in) |
| Distance Spindle Nose to Table | 150~950 mm (5.9~37.4 in) |
| Spindle Taper | BT-40 / CAT-40; HSK A63(Opt.) |
| Spindle Bearing Diameter | 70 mm (2.8 in) |
| Spindle Speed | 8,000; 10,000/12,000 rpm (Opt.); 15,000, 18,000, 20,000 rpm (Opt.) |
| Spindle Motor Power | 7.5 / 11 kW (10.1 / 14.8 hp) Hi Lo Gear; 18.5 / 23 kW (24.8 / 30.8 hp) Built-in |
| Rapid Traverse Xyz | 12 / 12 / 12 m/min (472 / 472 / 472 ipm) |
| Cutting Feed Rate | 1~10,000 mm/min (0.04~394 ipm) |
| Max Tool Diameter Adjacent Pockets | Ø75 mm (Ø3 in) |
| Tool Capacity | Arm type 24 ; 32 / 40 (Opt.) |
| Max Tool Diameter (full magazine) | Ø100 mm (Ø4 in) |
| Max Tool Length | 320 mm (12.6 in) |
| Max Tool Weight | 10 kg (22 lb) |
| Tool Selection | Bi-direction random type, Shortest path |
| Max Table Load | 13,000 kg (28,600 lb) |
| Machine Dimensions | 11,290 x 5,580 x 3,960 mm (444.5 x 220 x 156 in) |
| Machine Weight | 42,200 kg (92,840 lb) |
Specifications sourced from johnford.com.tw — verified 2026-10-04
Strengths & Limitations
Strengths
- 4,200 x 2,050 mm (165.3 x 80.7 in) table with 4,100 x 2,300 mm of X and Y travel
- 13,000 kg (28,600 lb) table load
- HSK A63 built-in spindle options at 15,000, 18,000 and 20,000 rpm
- Thermal compensation on the spindle and linear scales are available
- Full enclosure on a machine of this size
Limitations
- Standard spindle is 7.5 / 11 kW (10.1 / 14.8 hp) at 8,000 rpm
- Tools limited to Ø100 mm (Ø4 in), 320 mm (12.6 in) and 10 kg (22 lb)
- 12 m/min (472 ipm) rapids across a four-metre table
- Occupies 11,290 x 5,580 mm (444.5 x 220 in) of floor
Best For
Frequently Asked Questions
01
4,200 x 2,050 mm (165.3 x 80.7 in), rated for 13,000 kg (28,600 lb). X travel is 4,100 mm (161.4 in) and Y travel is 2,300 mm (90.5 in), with 2,400 mm (94.4 in) between the columns.
02
The No.50 version is a separate model, the DMC-4100PH, with a BT-50 / CAT-50 spindle and a 22 / 26 kW (29.5 / 34.9 hp) Hi Lo Gear drive on the same frame and table.
03
8,000 rpm as standard. 10,000 and 12,000 rpm are optional, and with the HSK A63 built-in spindle 15,000, 18,000 and 20,000 rpm are listed as options.
04
42,200 kg (92,840 lb). The shorter DMC-3100P on the same frame weighs 35,000 kg (77,000 lb), and the narrower DMC-4100S weighs 37,500 kg (82,500 lb).
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