Hardinge GS-200-66L
Key Specifications
Chuck Size
Maximum Bar Capacity
Maximum Turning Diameter
Maximum Turning Length
Spindle Speed (Max)
Spindle Power
Overview
The Hardinge GS-200-66L is the long-bed, big-bore variant of Hardinge's GS-200 turning center, combining a 66 mm bar capacity with extended Z-axis travel for production turning of longer, medium-diameter parts. The L suffix indicates the extended bed, which provides approximately 600 mm of Z-axis turning length compared to the standard model's 450 mm. This makes the GS-200-66L the go-to machine in the GS lineup for shaft-type parts, long valve bodies, and cylinder components in the 40-66 mm bar diameter range.
The main spindle delivers 18.5 kW (25 hp) continuous power at speeds up to 4,000 RPM, with approximately 280 Nm of torque matched to the demands of 66 mm bar stock in steel and stainless steel. The spindle specifications are identical to the standard GS-200-66 — the long-bed extension adds Z-travel without changing the spindle platform. The A2-6 spindle nose with collet-ready bore maintains the Hardinge precision workholding advantage.
The extended cast iron slant bed supports precision linear guideways for both X and Z axes, with the longer Z-axis ballscrew providing smooth positioning across the full 600 mm travel. Rapid traverse rates of 24 m/min in X and 30 m/min in Z keep non-cutting time low even across the extended bed length. The 12-station turret with optional live tooling, C-axis, and programmable tailstock provides full production capability.
The GS-200-66L runs on Fanuc 0i-TF control and targets production shops machining long, medium-diameter parts: hydraulic cylinder rods, long valve stems, automotive shafts, and industrial components that require both the big-bore bar capacity and the extended turning length. It competes with long-bed models from Haas (ST-20L Big Bore), Mazak (QT-200 MSY-L), and DN Solutions (Lynx 2600L) in the big-bore long-bed turning center segment.
Full Specifications
| Parameter | Value |
|---|---|
| Chuck Size | 8 in (203 mm) |
| Maximum Bar Capacity | 66 mm (2.60 in) |
| Maximum Turning Diameter | 300 mm (11.81 in) |
| Maximum Turning Length | 600 mm (23.62 in) |
| Spindle Speed (Max) | 4,000 RPM |
| Spindle Power | 18.5 kW (25 hp) |
| Spindle Torque (Max) | 280 Nm (207 ft-lb) |
| Spindle Nose | A2-6 |
| Spindle Bore | 66 mm (2.60 in) |
| Travel X | 200 mm (7.87 in) |
| Travel Z | 600 mm (23.62 in) |
| Turret Stations | 12 (VDI) |
| Live Tooling | Optional |
| C-Axis | Optional |
| Tailstock | Programmable (optional) |
| Guideway Type | Precision linear guideways |
| Rapid Traverse X | 24 m/min (945 ipm) |
| Rapid Traverse Z | 30 m/min (1,181 ipm) |
| Control | Fanuc 0i-TF |
| Machine Weight | 3,800 kg (8,378 lb) |
Specifications sourced from hardinge.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Extended 600 mm Z-axis travel accommodates shaft-type parts and long components that exceed the standard model's turning length
- 66 mm big-bore bar capacity handles medium-diameter bar stock that standard 51 mm machines cannot process
- 18.5 kW spindle with 280 Nm torque provides productive cutting power for steel and stainless at full bar capacity
- Linear guideways deliver fast rapids across the extended bed for reduced non-cutting time on long parts
- Optional programmable tailstock provides essential support for long, slender workpieces to prevent deflection
- Collet-ready spindle maintains Hardinge precision advantage even at the larger 66 mm bore size
Limitations
- Extended bed increases the machine footprint, requiring more floor space than the standard GS-200-66
- 4,000 RPM spindle speed is moderate due to the large bore, limiting high-speed finishing on small-diameter features
- Long-bed configuration adds cost over the standard model for the extended bed and longer ballscrew assembly
- Hardinge corporate restructuring may impact service and parts availability in some regions
Best For
Frequently Asked Questions
01
The L designation indicates the long-bed variant with extended Z-axis travel of 600 mm versus the standard model's 450 mm. All other specifications including spindle power, bar capacity, chuck size, and turret configuration are identical. Choose the L variant for parts requiring turning lengths exceeding 450 mm.
02
The programmable tailstock is strongly recommended for long parts with length-to-diameter ratios exceeding 4:1. Without tailstock support, slender parts will deflect under cutting forces, causing taper errors and chatter. The programmable tailstock adjusts automatically via CNC for different part lengths.
03
Yes, the 66 mm bar capacity is compatible with mid-range bar feeders from LNS, Iemca, and Edge Technologies. The extended bed accommodates longer bar remnants, and the Fanuc control includes bar feeder interface parameters for automated production.
04
The Haas ST-20L offers more spindle power (22.4 kW), higher spindle speed (4,000 RPM), and a lower price point with extensive dealer support. The Hardinge GS-200-66L counters with collet-ready spindle precision, the 66 mm big-bore capacity, and the Hardinge quality reputation. For shops prioritizing precision and collet workholding, the Hardinge justifies its premium.
Videos
Toolquip, Inc.
MachinesUsed
clarkmachinery
MachineStation
Charter Auctions Ltd
