Johnford ST-70BX
Key Specifications
Max Spindle
Rapid Traverse
Spindle Power
swing over bed
swing over cross slide
chuck size
How much does the Johnford ST-70BX cost?
Price estimate
We do not have a price for the Johnford ST-70BX 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-70BX is the last stop before Johnford's long beds for a shop that needs 800 mm (31.5 in) of swing over the cross slide. It has 1,600 mm (63 in) of Z travel and an A2-11 spindle.
The model above it in length is the ST-80BH, which has 2,000 mm (78.7 in) of Z travel and the same 800 mm (31.5 in) over the cross slide, and weighs 15,100 kg (33,220 lb) against 13,400 kg (29,480 lb) here. The ST-80BH also has a Ø200 mm (7.9 in) MT#7 tailstock quill and rapids of 10 m/min and 12 m/min.
Which to pick depends on the heaviest part more than on the longest. The ST-70BX holds the far end of the work on a Ø125 mm (4.9 in) MT#5 quill, moves faster at 12 m/min on X and 16 m/min on Z, and is nearly a metre shorter at 6,482 mm (255.2 in).
Spindle speed is 2,000 rpm with four automatic speeds; power is 22 / 26 kW (29.5 / 34.9 hp), optionally 30 / 37 kW (40.2 / 49.6 hp). Bore is 132.5 mm (5.2 in), bar capacity 116 mm (4.6 in), X travel 420 mm (16.5 in) and tailstock travel 1,300 mm (51.2 in).
Full Specifications
| Parameter | Value |
|---|---|
| Swing Over Bed | 1,020 mm (40.2 in) |
| Swing Over Cross Slide | 800 mm (31.5 in) |
| Chuck Size | 381 mm (15 in) |
| Chuck Size Optional | 450 mm (17.7 in) |
| Bar Capacity | 116 mm (4.6 in) |
| Spindle Nose | A2-11 |
| Spindle Bore | 132.5 mm (5.2 in) |
| Spindle Transmission | Auto 4 speeds |
| Max Spindle Speed | 2,000 rpm |
| Spindle Motor Power | 22 / 26 kW (29.5 / 34.9 hp) (Std.); 30 / 37 kW (40.2 / 49.6 hp) (Opt.) |
| Spindle Bearing Diameter | 180 mm (7.1 in) |
| Turret Stations | 12 |
| X Axis Travel | 420 mm (16.5 in) |
| Y Axis Travel Optional | ±75 mm (±3 in) |
| Z Axis Travel | 1,600 mm (63 in) |
| Rapid Traverse Rate | X: 12 m/min (472 ipm); Y: 10 m/min (394 ipm); Z: 16 m/min (630 ipm) |
| Tailstock Travel | 1,300 mm (51.2 in) |
| Tailstock Quill Travel | 125 mm (4.9 in) |
| Tailstock Quill Diameter | Ø125 mm (Ø4.9 in) |
| Tailstock Taper | MT#5 |
| Servo Motor X | 7 kW |
| Servo Motor Y Optional | 3 kW |
| Servo Motor Z | 7 kW |
| Bed Inclination | 60° |
| Machine Weight | 13,400 kg (29,480 lb) |
| Machine Dimensions | 6,482 x 2,290 x 2,765 mm (255.2 x 90.2 x 108.9 in) |
Specifications sourced from johnford.com.tw — verified 2026-10-04
Strengths & Limitations
Strengths
- 1,600 mm (63 in) of Z travel with 800 mm (31.5 in) swing over the cross slide
- Lighter and faster than the ST-80BH
- 420 mm (16.5 in) of X travel
- Optional 30 / 37 kW (40.2 / 49.6 hp) motor
- Tailstock travel of 1,300 mm (51.2 in)
Limitations
- Tailstock quill is Ø125 mm (4.9 in), MT#5
- Z travel ends at 1,600 mm (63 in)
- Spindle speed stops at 2,000 rpm
- 116 mm (4.6 in) bar capacity
Best For
Frequently Asked Questions
01
The ST-80BH has 2,000 mm (78.7 in) of Z travel, a Ø200 mm (7.9 in) MT#7 quill, rapids of 10 m/min and 12 m/min and a weight of 15,100 kg (33,220 lb). The ST-70BX has 1,600 mm (63 in), a Ø125 mm (4.9 in) MT#5 quill, rapids of 12 m/min and 16 m/min and 13,400 kg (29,480 lb).
02
1,020 mm (40.2 in) over the bed and 800 mm (31.5 in) over the cross slide. The standard chuck is 381 mm (15 in) and the optional one 450 mm (17.7 in).
03
13,400 kg (29,480 lb). Its outside dimensions are 6,482 x 2,290 x 2,765 mm (255.2 x 90.2 x 108.9 in), on a 60° slant bed.
04
Yes, as an option: a sub-spindle or counter-spindle in replacement of the tailstock. The standard machine has a programmable hydraulic tailstock with rotary quill.
More from Johnford
Other CNC Lathes / Turning Centers
Hardinge Talent 6/51
Accuway UV-55EC
DN Solutions PUMA V 400
Mazak Power Master
