Johnford GT Series – 60˚ Slant Bed Lathes up to 61″ Swing over Bed

The Johnford GT Series consists of eight large-frame horizontal slant bed CNC lathes engineered for heavy-duty turning, long-part machining, and high-horsepower roughing applications. Built in Johnford’s own casting foundry — a rare capability in the machine tool industry — the GT Series features a one-piece 45° torque-tube slant bed design that delivers exceptional rigidity, thermal stability, and structural integrity.

These machines serve industries such as energy, oil & gas, aerospace, locomotive, and heavy equipment, where accuracy on long or oversized cylindrical components is essential. Competitively positioned against Okuma, Doosan (DN Solutions), Mazak, and DMG Mori, the GT Series offers superior mass, rigidity, and customization flexibility at a significantly more economical price point.

Key Features

• One-piece 45° torque-tube slant bed for maximum rigidity, heat dissipation, and structural stability in heavy-duty slant bed CNC turning applications.
• Meehanite cast iron construction, produced in-house, ensuring high density, damping, and long-term geometric accuracy across all GT models.
• Massive box-way design providing rigidity ideal for heavy roughing, large-diameter turning, and machining of long shafts.
• High-torque 4-speed geared spindle (50–100 HP) engineered for deep cuts and heavy interrupted machining on large cylindrical parts.
• Precision spindle bearing arrangement with double-row roller bearings plus angular contact bearings for superior radial/axial support.
• Large swing capacities: 61″ over bed and 50″ over cross slide support oversized workpieces commonly found in energy and heavy equipment sectors.
• Long-bed configurations from 40″ to 393″ to support turning of oversized shafts, turbine and generator rotors, long hydraulic cylinders, propulsion components, and extended oilfield tooling. Because Johnford operates its own casting plant, ultra-long-bed machines maintain structural rigidity and geometric stability without the deflection issues often seen in extended-length slant-bed platforms.
• 60° inclined saddle casting for greater swing and improved chip evacuation at the cutting zone.
• Hand-scraped Turcite-B sliding surfaces for smooth motion and stable accuracy during fine finishing operations.
• Pre-tensioned double-nut ballscrews to minimize thermal error and maintain precision over long machining cycles.
• Programmable hydraulic tailstock providing rigid support for long and heavy workpieces.
• Optional live tooling and full C-axis converting the machine into a flexible turning-milling solution for drilling, tapping, contouring, and multi-operation processing.
• Optional high-pressure coolant, tool probe systems, and large chucking solutions for optimized chip removal and improved tool life.