Johnford ST-160DH
Key Specifications
Max Spindle
Rapid Traverse
Spindle Power
swing over bed
swing over cross slide
chuck size
How much does the Johnford ST-160DH cost?
Price estimate
We do not have a price for the Johnford ST-160DH 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
Long tubes of large outside diameter, bored along their length, are the natural work for the Johnford ST-160DH. It has 4,050 mm (159.4 in) of Z travel, 800 mm (31.5 in) of swing over the cross slide and a 185 mm (7.3 in) spindle bore.
Boring a long tube needs a long bar, and a long bar needs somewhere to live. On an ordinary turret the overhang is limited. Johnford's answer is in the options: a boring bar holder mounted on the turret carriage, or a completely independent boring bar system, together with a dented space on the headstock sheet metal for boring bar clearance.
The outside of the tube sets the frame. With 1,000 mm (39.4 in) over the bed and 420 mm (16.5 in) of X travel, a tube well beyond the chuck diameter is within reach, and steady rests can carry it along the bed.
The spindle runs at 1,000 rpm with four automatic speeds and 30 / 37 kW (40.2 / 49.6 hp). Bar capacity is 165 mm (6.5 in). Tailstock travel is 3,600 mm (141.7 in). The machine weighs 24,600 kg (54,120 lb) and measures 9,926 x 2,504 x 2,955 mm (390.8 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 | 4,050 mm (159.4 in) |
| Rapid Traverse Rate | X: 10 m/min (394 ipm); Y: 10 m/min (394 ipm); Z: 12 m/min (472 ipm) |
| Tailstock Travel | 3,600 mm (141.7 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 | 24,600 kg (54,120 lb) |
| Machine Dimensions | 9,926 x 2,504 x 2,955 mm (390.8 x 98.6 x 116.3 in) |
Specifications sourced from johnford.com.tw — verified 2026-10-04
Strengths & Limitations
Strengths
- 4,050 mm (159.4 in) of Z travel for long tubes
- Independent boring bar system and headstock clearance available
- 185 mm (7.3 in) bore, 165 mm (6.5 in) bar capacity
- 800 mm (31.5 in) swing over the cross slide, 420 mm (16.5 in) of X travel
- Tailstock travel of 3,600 mm (141.7 in)
Limitations
- Boring bar systems and steady rests are options
- Spindle speed limited to 1,000 rpm
- 24,600 kg (54,120 lb) and 9,926 mm (390.8 in) long
- Z rapid traverse of 12 m/min
Best For
Frequently Asked Questions
01
Through options: a boring bar holder mounted on the turret carriage or a completely independent boring bar system, and a dented space on the headstock sheet metal for boring bar clearance.
02
Up to 800 mm (31.5 in) over the cross slide and 1,000 mm (39.4 in) over the bed, with 4,050 mm (159.4 in) of Z travel. Stock up to 165 mm (6.5 in) passes through the spindle.
03
04
1,000 rpm through four automatic speeds, with 30 / 37 kW (40.2 / 49.6 hp) as standard and 37 / 45 kW (49.6 / 60.3 hp) as an option.
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