Johnford ST-240BH
Key Specifications
Max Spindle
Rapid Traverse
Spindle Power
swing over bed
swing over cross slide
chuck size
How much does the Johnford ST-240BH cost?
Price estimate
We do not have a price for the Johnford ST-240BH 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-240BH has 6,050 mm (238.2 in) of Z travel, the longest in the ST range, on the 1,000 mm (39.4 in) swing frame with the A2-11 spindle.
Three frames carry this bed length and spindle. The ST-240B swings 700 mm (27.6 in) over the cross slide and weighs 32,100 kg (70,620 lb). The ST-240BH swings 800 mm (31.5 in) and weighs 32,200 kg (70,840 lb). The ST-240BX swings 1,000 mm (39.4 in) and weighs 32,300 kg (71,060 lb). The steps are even, and the middle frame is the natural default: more clearance than the smallest for very little extra, and narrower than the largest.
At 2,504 mm (98.6 in) wide it keeps the width of the smaller frame, where the ST-240BX is 2,950 mm (116.1 in) wide.
The spindle runs to 2,000 rpm through four automatic speeds on 22 / 26 kW (29.5 / 34.9 hp), with 30 / 37 kW (40.2 / 49.6 hp) optional. Bore is 132.5 mm (5.2 in) and bar capacity 116 mm (4.6 in). Tailstock travel is 5,400 mm (212.6 in), X travel 420 mm (16.5 in), and the machine is 11,667 mm (459.3 in) long.
Full Specifications
| Parameter | Value |
|---|---|
| Swing Over Bed | 1,000 mm (39.4 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 | 6,050 mm (238.2 in) |
| Rapid Traverse Rate | X: 10 m/min (394 ipm); Y: 10 m/min (394 ipm); Z: 12 m/min (472 ipm) |
| Tailstock Travel | 5,400 mm (212.6 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 | 32,200 kg (70,840 lb) |
| Machine Dimensions | 11,667 x 2,504 x 2,955 mm (459.3 x 98.6 x 116.3 in) |
Specifications sourced from johnford.com.tw — verified 2026-10-04
Strengths & Limitations
Strengths
- 6,050 mm (238.2 in) of Z travel
- 800 mm (31.5 in) swing over the cross slide at 2,504 mm (98.6 in) of machine width
- Tailstock travel of 5,400 mm (212.6 in)
- 2,000 rpm with four automatic speeds
- Only slightly heavier than the ST-240B
Limitations
- Machine weight of 32,200 kg (70,840 lb)
- Standard power of 22 / 26 kW (29.5 / 34.9 hp)
- 11,667 mm (459.3 in) of length
- 116 mm (4.6 in) bar capacity
Best For
Frequently Asked Questions
01
In swing over the cross slide: 700 mm (27.6 in) on the ST-240B, 800 mm (31.5 in) on the ST-240BH and 1,000 mm (39.4 in) on the ST-240BX. The weights are 32,100 kg (70,620 lb), 32,200 kg (70,840 lb) and 32,300 kg (71,060 lb).
02
11,667 x 2,504 x 2,955 mm (459.3 x 98.6 x 116.3 in). The bed is a 60° slant type with a 12-position turret, and the weight is 32,200 kg (70,840 lb).
03
The B spindle: A2-11 nose, 132.5 mm (5.2 in) bore, 180 mm (7.1 in) bearing diameter, 381 mm (15 in) chuck and 2,000 rpm. A 450 mm (17.7 in) chuck is optional.
04
5,400 mm (212.6 in), with a further 150 mm (5.9 in) in the quill. The quill is Ø200 mm (7.9 in) with an MT#7 taper.
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