Johnford ST-100B
Key Specifications
Max Spindle
Rapid Traverse
Spindle Power
swing over bed
swing over cross slide
chuck size
How much does the Johnford ST-100B cost?
Price estimate
We do not have a price for the Johnford ST-100B 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-100B has 2,400 mm (94.5 in) of Z travel and 2,100 mm (82.7 in) of tailstock travel on the 920 mm (36.2 in) swing frame, with the A2-11 spindle.
In the weight column this model belongs with the shortest long-bed lathe, not with the longer ones. It is listed at 16,500 kg (36,300 lb), close to the ST-80B at 15,000 kg (33,000 lb). The next size, the ST-130B, jumps to 20,100 kg (44,220 lb). For a buyer whose parts run a little over two metres, the ST-100B therefore covers the length without the foundation and floor load of the three-metre machine.
Length is 7,812 mm (307.6 in); width and height, 2,504 mm (98.6 in) and 2,895 mm (114 in), are common to the whole frame.
The working figures are those of every B-spindle model on this frame. Chuck 381 mm (15 in), optionally 450 mm (17.7 in). Bore 132.5 mm (5.2 in), bar capacity 116 mm (4.6 in). Four automatic speeds to 2,000 rpm from 22 / 26 kW (29.5 / 34.9 hp), or 30 / 37 kW (40.2 / 49.6 hp) with the optional motor. X travel 370 mm (14.6 in), swing over the cross slide 700 mm (27.6 in), 12-position turret.
Full Specifications
| Parameter | Value |
|---|---|
| Swing Over Bed | 920 mm (36.2 in) |
| Swing Over Cross Slide | 700 mm (27.6 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 | 370 mm (14.6 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 | 16,500 kg (36,300 lb) |
| Machine Dimensions | 7,812 x 2,504 x 2,895 mm (307.6 x 98.6 x 114 in) |
Specifications sourced from johnford.com.tw — verified 2026-10-04
Strengths & Limitations
Strengths
- 2,400 mm (94.5 in) of Z travel at 16,500 kg (36,300 lb)
- Tailstock travel of 2,100 mm (82.7 in)
- Optional 30 / 37 kW (40.2 / 49.6 hp) spindle motor
- Ø200 mm (7.9 in) MT#7 quill
- 450 mm (17.7 in) chuck available
Limitations
- Standard motor is 22 / 26 kW (29.5 / 34.9 hp)
- Rapid traverse on Z is 12 m/min
- 116 mm (4.6 in) bar capacity
- Steady rests are optional accessories
Best For
Frequently Asked Questions
01
16,500 kg (36,300 lb). The ST-80B, with 2,000 mm (78.7 in) of Z travel, weighs 15,000 kg (33,000 lb), and the ST-130B, with 3,050 mm (120.1 in), weighs 20,100 kg (44,220 lb).
02
370 mm (14.6 in) on X and 2,400 mm (94.5 in) on Z. The optional Y axis travels ±75 mm (±3 in). The tailstock travels 2,100 mm (82.7 in) and its quill 150 mm (5.9 in).
03
The B spindle with an A2-11 nose, 132.5 mm (5.2 in) bore and 180 mm (7.1 in) bearing diameter. It has four automatic speeds, a top speed of 2,000 rpm and a belt-type gearbox for heavy-duty cutting.
04
7,812 mm (307.6 in), with a width of 2,504 mm (98.6 in) and a height of 2,895 mm (114 in). A chain type chip conveyor with trolley is part of the standard equipment.
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