Johnford ST-100DH
Key Specifications
Max Spindle
Rapid Traverse
Spindle Power
swing over bed
swing over cross slide
chuck size
How much does the Johnford ST-100DH cost?
Price estimate
We do not have a price for the Johnford ST-100DH 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 Johnford ST-100DH brings together the largest standard spindle and the 1,000 mm (39.4 in) swing frame on a bed with 2,400 mm (94.5 in) of Z travel.
Its spindle is as large as the standard ST table goes, and the options list goes further. Bigger spindle bores are offered, with Ø234, Ø318, Ø410 and Ø510 mm named. A frame that swings 800 mm (31.5 in) over the cross slide is the sensible base for those, since a spindle with a bore of that order needs a correspondingly large chuck, and the chuck needs room.
In the standard configuration the bore is 185 mm (7.3 in), the bar capacity 165 mm (6.5 in), the bearing 240 mm (9.4 in) and the chuck 510 mm (20.1 in). Speed is 1,000 rpm through four automatic speeds on 30 / 37 kW (40.2 / 49.6 hp). A geared headstock is listed with a 176 mm (6.9 in) bore.
Tailstock travel is 2,100 mm (82.7 in), on a Ø200 mm (7.9 in) MT#7 quill. X travel is 420 mm (16.5 in). The machine weighs 17,100 kg (37,620 lb) and its outside dimensions are 7,812 x 2,504 x 2,955 mm (307.6 x 98.6 x 116.3 in).
Full Specifications
| Parameter | Value |
|---|---|
| Swing Over Bed | 1,000 mm (39.4 in) |
| Swing Over Cross Slide | 800 mm (31.5 in) |
| Chuck Size | 510 mm (20.1 in) |
| Chuck Size Optional | 610 mm (24 in) |
| Bar Capacity | 165 mm (6.5 in) |
| Spindle Nose | A2-15 |
| Spindle Bore | 185 mm (7.3 in) / Geared headstock 176 mm (6.9 in) |
| Spindle Transmission | Auto 4 speeds |
| Max Spindle Speed | 1,000 rpm |
| Spindle Speed Geared Headstock | 1,000 rpm |
| Spindle Motor Power | 30 / 37 kW (40.2 / 49.6 hp) (Std.); 37 / 45 kW (49.6 / 60.3 hp) (Opt.) |
| Spindle Bearing Diameter | 240 mm (9.4 in) |
| Turret Stations | 12 |
| X Axis Travel | 420 mm (16.5 in) |
| Y Axis Travel Optional | ±75 mm (±3 in) |
| Z Axis Travel | 2,400 mm (94.5 in) |
| Rapid Traverse Rate | X: 10 m/min (394 ipm); Y: 10 m/min (394 ipm); Z: 12 m/min (472 ipm) |
| Tailstock Travel | 2,100 mm (82.7 in) |
| Tailstock Quill Travel | 150 mm (5.9 in) |
| Tailstock Quill Diameter | Ø200 mm (Ø7.9 in) |
| Tailstock Taper | MT#7 |
| Servo Motor X | 7 kW |
| Servo Motor Y Optional | 3 kW |
| Servo Motor Z | 7 kW |
| Bed Inclination | 60° |
| Machine Weight | 17,100 kg (37,620 lb) |
| Machine Dimensions | 7,812 x 2,504 x 2,955 mm (307.6 x 98.6 x 116.3 in) |
Specifications sourced from johnford.com.tw — verified 2026-10-04
Strengths & Limitations
Strengths
- 185 mm (7.3 in) bore, with still larger bores as an option
- 800 mm (31.5 in) swing over the cross slide
- 2,400 mm (94.5 in) of Z travel
- 240 mm (9.4 in) spindle bearing
- Tailstock travel of 2,100 mm (82.7 in)
Limitations
- Spindle speed limited to 1,000 rpm
- Machine weight of 17,100 kg (37,620 lb)
- Bores beyond 185 mm (7.3 in) are special options
- Rapid traverse of 10 m/min on X
Best For
Frequently Asked Questions
01
The optional accessory list states that bigger spindle bores like Ø234, Ø318, Ø410, Ø510 mm or even greater are available. The standard D spindle has a 185 mm (7.3 in) bore and 165 mm (6.5 in) of bar capacity.
02
1,000 mm (39.4 in) over the bed and 800 mm (31.5 in) over the cross slide, with 420 mm (16.5 in) of X travel and 2,400 mm (94.5 in) of Z travel.
03
04
A 30 / 37 kW (40.2 / 49.6 hp) motor, or 37 / 45 kW (49.6 / 60.3 hp) as an option, through four automatic speeds to 1,000 rpm. The accessory list names a belt-type gearbox as standard.
More from Johnford
Other CNC Lathes / Turning Centers
SYIL L2
DN Solutions PUMA 4100 XLMB
DN Solutions LYNX 2100
You Ji YV1600
