Johnford SL-100A-2S
Key Specifications
Max Spindle
Spindle Power
swing over bed
swing over cross slide
chuck size
bar capacity
How much does the Johnford SL-100A-2S cost?
Price estimate
We do not have a price for the Johnford SL-100A-2S 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 longest twin-spindle lathe in Johnford's SL table is the SL-100A-2S, with 2,300 mm (90.6 in) of travel on the Z1 and Z2 axes. A 12 in main spindle and an 8 in sub-spindle face each other across a bed that swings Ø700 mm (Ø27.6 in).
Few parts need a sub-spindle at this length, and those that do are specific. Long hydraulic and pneumatic cylinder tubes are one: both ends are bored, grooved and threaded, and concentricity between the ends decides whether the cylinder seals. Others are drill rods and oilfield tubulars with a connection at each end, long printing cylinders with journals at both sides, and drive shafts with splines at both ends. In each case the sub-spindle lets the second end be machined in the same coordinate system as the first.
The spindles are those of the shorter large models. Main: 22 / 26 kW (29.5 / 34.9 hp), 2 step automatic transmission, 3,000 rpm, Ø115 mm (Ø4.5 in) bore. Sub: 11 / 15 kW (14.8 / 20.1 hp), 4,500 rpm, Ø66 mm (Ø2.6 in) bore. A tube larger than the sub-spindle bore is gripped on its outside diameter in the 8 in chuck.
Between two chucks 2,300 mm apart a tube will sag and whip. The optional hydraulic steady rests, and coolant through the turret at 20 bar or above for internal work, are the accessories to discuss first.
The machine weighs 15,000 kg (33,000 lb), is 7,700 mm (303.1 in) long, and rapids at 12 / 10 / 15 / 15 m/min (472 / 394 / 591 / 591 ipm).
Full Specifications
| Parameter | Value |
|---|---|
| Swing Over Bed | Ø700 mm (Ø27.6 in) |
| Swing Over Cross Slide | Ø540 mm (Ø21.3 in) |
| Chuck Size | 12 in (305 mm) |
| Bar Capacity | Ø91 mm (Ø3.6 in) / Ø102 mm (Ø4 in) (Opt.) |
| Spindle Nose | A2-8 / A2-11(Opt.) |
| Spindle Bore | Ø115 mm (Ø4.5 in) |
| Spindle Transmission | 2 step Auto |
| Max Spindle Speed | 3,000 / 2,800 rpm (Opt.) |
| Spindle Motor Power | 22 / 26 kW (29.5 / 34.9 hp) |
| Spindle Bearing Diameter | Ø160 mm (Ø6.3 in) |
| Sub Spindle Chuck Size | 8 in (203 mm) |
| Sub Spindle Bar Capacity | Ø51 mm (Ø2 in) |
| Sub Spindle Nose | A2-6 |
| Sub Spindle Bore | Ø66 mm (Ø2.6 in) |
| Sub Spindle Transmission | One step |
| Sub Spindle Speed | 4,500 rpm |
| Sub Spindle Power | 11 / 15 kW (14.8 / 20.1 hp) |
| Sub Spindle Bearing Diameter | Ø100 mm (Ø3.9 in) |
| Turret Stations | 12 |
| X Axis Travel | 295 mm (11.6 in) |
| Y Axis Travel | ±50 mm (±2 in) |
| Z Axis Travel | 2,300 mm (90.6 in) |
| Rapid Traverse X1 Y Z1 Z2 | 12 / 10 / 15 / 15 m/min (472 / 394 / 591 / 591 ipm) |
| Servo Motor X | 3 kW; 4 kW with Y-axis |
| Servo Motor Y | 3.8 kW |
| Servo Motor Z1 Z2 | 4 kW |
| Power Turret Motor | 3.7 / 5.5 kW (5.0 / 7.4 hp) |
| Bed Inclination | 45° |
| Machine Weight | 15,000 kg (33,000 lb) |
| Machine Width Height | 2,520 x 2,200 mm (99.2 x 86.6 in) |
| Machine Length | 7,700 mm (303.1 in) |
Specifications sourced from johnford.com.tw — verified 2026-10-04
Strengths & Limitations
Strengths
- 2,300 mm (90.6 in) of Z1/Z2 travel, the longest 2S model
- Both ends of a long part machined in one coordinate system
- 12 in main chuck with 22 / 26 kW (29.5 / 34.9 hp) and a 2 step Auto transmission
- Ø540 mm (Ø21.3 in) swing over the cross slide, 295 mm (11.6 in) of X
- Optional Y-axis with ±50 mm (±2 in)
Limitations
- 8 in sub-spindle with a Ø66 mm (Ø2.6 in) bore on a 2,300 mm bed
- No tailstock; the sub-spindle replaces it
- Steady rests and high pressure coolant are options
- 7,700 mm (303.1 in) of machine length
Best For
Frequently Asked Questions
01
Z1/Z2 travel is 2,300 mm (90.6 in) and the machine is 7,700 mm (303.1 in) long, 2,520 x 2,200 mm (99.2 x 86.6 in) in width and height. It weighs 15,000 kg (33,000 lb).
02
The SL-100A has a tailstock with 2,200 mm (86.6 in) of travel and 2,500 mm (98.4 in) of Z, and weighs 16,000 kg (35,200 lb). The SL-100A-2S has a sub-spindle instead, 2,300 mm (90.6 in) of Z1/Z2 travel and weighs 15,000 kg (33,000 lb).
03
An 8 in chuck, an A2-6 nose, Ø51 mm (Ø2 in) bar capacity, a Ø66 mm (Ø2.6 in) bore, 11 / 15 kW (14.8 / 20.1 hp) and 4,500 rpm with a one step transmission.
04
Fanuc 0i-TF PLUS with a 10.4 in LCD and Manual Guide i as standard. Siemens SINUMERIK 828D, Fanuc 31i-MB PLUS and Siemens SINUMERIK ONE controllers are options.
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