Hardinge Quest 10/65
Key Specifications
Chuck Size
Maximum Bar Capacity
Maximum Turning Diameter
Maximum Turning Length
Spindle Speed (Max)
Spindle Power
Overview
The Hardinge Quest 10/65 is the largest super-precision CNC turning center in the Quest series, featuring a 10-inch chuck and 65 mm bar capacity that extends Hardinge's legendary precision turning technology into the medium-diameter part range. The Quest 10/65 delivers the same sub-5-micron concentricity and surface finish quality associated with smaller Hardinge collet lathes, but in a larger envelope that accommodates a wider range of production turning applications.
The main spindle produces 18.5 kW (25 hp) continuous power at speeds up to 4,500 RPM, with approximately 280 Nm of torque for productive cutting in steel, stainless, and titanium at the full 65 mm bar capacity. The spindle incorporates Hardinge's proprietary bearing preload system and collet-ready nose, accepting both collet and chuck workholding. The 10-inch hydraulic chuck handles castings and forgings up to 350 mm swing diameter for second-operation work.
Built on a one-piece cast iron slant bed with hardened and ground box ways, the Quest 10/65 provides the vibration damping and thermal stability critical for maintaining precision over long production runs. X-axis travel of 220 mm and Z-axis travel of 550 mm define a generous turning envelope. The 12-station turret accepts VDI or BMT tooling with optional live tooling and C-axis for mill-turn capability.
The Quest 10/65 is controlled by Fanuc 0i-TF Plus and targets production environments where precision on medium-diameter parts is non-negotiable: aerospace landing gear components, hydraulic manifold bodies, medical implant housings, and defense applications. It competes with the Okuma LB3000 EX II, DMG Mori CLX 450, and Mazak Quick Turn 250 in the precision 10-inch turning center segment.
Full Specifications
| Parameter | Value |
|---|---|
| Chuck Size | 10 in (254 mm) |
| Maximum Bar Capacity | 65 mm (2.56 in) |
| Maximum Turning Diameter | 350 mm (13.78 in) |
| Maximum Turning Length | 550 mm (21.65 in) |
| Spindle Speed (Max) | 4,500 RPM |
| Spindle Power | 18.5 kW (25 hp) |
| Spindle Torque (Max) | 280 Nm (207 ft-lb) |
| Spindle Bore | 65 mm (2.56 in) |
| Travel X | 220 mm (8.66 in) |
| Travel Z | 550 mm (21.65 in) |
| Turret Stations | 12 (VDI/BMT, live tooling capable) |
| C-Axis | Optional |
| Guideway Type | Hardened and ground box ways |
| Rapid Traverse X | 20 m/min (787 ipm) |
| Rapid Traverse Z | 24 m/min (945 ipm) |
| Control | Fanuc 0i-TF Plus |
| Machine Weight | 4,500 kg (9,921 lb) |
Specifications sourced from hardinge.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Largest Quest series machine extends Hardinge super-precision turning to 65 mm bar and 350 mm swing, covering medium-diameter production work
- 18.5 kW spindle with 280 Nm torque handles productive cutting in stainless steel and titanium at full bar capacity
- Box way construction provides superior vibration damping for consistent surface finish quality on precision turning operations
- Collet-ready spindle delivers sub-5-micron concentricity for precision bar work, a significant advantage over chuck-only competitors
- 12-station turret with live tooling option enables complete mill-turn processing without moving parts to a second machine
- 4,500 kg machine mass provides excellent thermal stability for maintaining dimensional accuracy over long production runs
Limitations
- 4,500 RPM maximum spindle speed is moderate compared to competitors offering 5,000-6,000 RPM in the 10-inch class
- Box way rapid traverse is slower than linear-guideway machines, adding non-cutting time in high-volume applications
- Premium pricing reflects Hardinge's precision heritage but may exceed budget for shops where standard tolerances suffice
- Hardinge's corporate restructuring creates uncertainty around long-term service and parts availability
Best For
Frequently Asked Questions
01
The Quest 10/65 offers a larger 65 mm bar capacity, 10-inch chuck, and more spindle power (18.5 kW vs 15 kW) for medium-diameter work. The 8/51 SP includes a standard sub-spindle for complete part processing. Choose the 10/65 when part diameter exceeds 51 mm; choose the 8/51 SP when sub-spindle complete processing is the priority.
02
The sub-spindle is available as an option on the Quest 10/65, though it is not included in the base configuration. Adding the sub-spindle enables complete part processing from bar, including back-turning and back-boring operations. This option adds significantly to the machine price but eliminates secondary operations.
03
The Quest 10/65 achieves roundness within 2-3 microns, concentricity within 5 microns TIR at the collet face, and surface finishes of Ra 0.2-0.4 microns on precision turned features. These specifications are achievable in production conditions, not just on test cuts, due to the box way construction and precision spindle system.
04
Yes, the Quest 10/65 handles hardened materials up to approximately 55-60 HRC using CBN tooling. The box way construction provides the rigidity needed for hard turning, and the 18.5 kW spindle delivers adequate power for productive CBN turning within the machine's envelope. Surface finishes of Ra 0.4-0.8 microns are typical on hardened steel.
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