Extra-Long Conventional Lathe
Extra-Long Conventional Lathe & Heavy-Duty Manual Lathe Manufacturer
Precision Heavy-Duty Turning for Extended Shafts, Industrial Rolls, and Oversized Components
An extra-long conventional lathe is a heavy-duty manual turning machine built on an extended, high-rigidity bed. Unlike standard workshop lathes, it is designed to process multi-meter workpieces—such as long drive shafts, hydraulic rams, and industrial rollers—without loss of alignment accuracy or structural deflection.
These machines serve repair facilities, heavy equipment builders, and custom job shops that require direct operator control. Without the long programming setup of automated machines, experienced machinists can quickly mount raw forgings, execute heavy roughing cuts, and finish long turned parts cost-effectively for short-run production.
Technical Specifications
|
Parameter |
Operational Specification Range |
|
Bed Length Options |
3,000 mm to 12,000 mm |
|
Distance Between Centers |
1,500 mm to 10,000 mm |
|
Swing Over Bed |
630 mm to 1,600 mm |
|
Swing Over Cross Slide |
380 mm to 1,200 mm |
|
Spindle Bore Diameter |
105 mm to 130 mm (Custom sizes available) |
|
Bedway Width |
550 mm to 755 mm |
|
Spindle Speed Range |
10 rpm to 800 rpm (Multi-step gearbox) |
|
Main Motor Drive |
11 kW to 22 kW heavy-duty motor |
|
Tailstock Quill Taper |
MT-5 / MT-6 (Diameter: 100 mm – 150 mm) |
|
Threading Range |
Metric, Inch, Module, and Diametral pitch |
Monoblock Meehanite Bed Casting
Cross-ribbed cast iron structure dampens cutting chatter and resists twisting under multi-ton workpieces.
Hardened & Ground Bedways
Induction-hardened guidance tracks prevent bed wear and maintain straightness over decades of operation.
High-Torque Headstock Gearbox
Precision-ground alloy gears deliver sustained turning torque during heavy depth-of-cut machining.
Heavy-Duty Spindle Bearing System
Tapered roller bearings absorb heavy radial loading and axial thrust from large-diameter stock.
Rigid Tailstock Assembly
Massive quill structure keeps center alignment steady without backward deflection under load.
Dual Rest Support Systems
Includes adjustable closed steady rests and follow rests to eliminate shaft sagging during turning.
Centralized Bedway Lubrication
Automatic oil delivery protects sliding surfaces and leadscrews from friction wear and fine chips.
Machining Applications
Long Shaft Turning
Machining power transmission shafts, generator rotors, and crane drive shafts with consistent straightness.
01
Industrial Roller Production
Precision turning for steel mill pinch rolls, conveyor drums, rubber printing rollers, and paper machine cylinders.
02
Hydraulic Cylinder Processing
External turning, facing, and threading for long hydraulic rams, oil barrels, and marine cylinders.
03
Heavy Axle Refinement
Turning mining truck axles, locomotive wheel shafts, and heavy machinery drivetrains.
04
Pipe & Tube Machining
Facing, beveling, and chasing threads on seamless steel pipes, oilfield drill collars, and casing tubes.
05
Mining Equipment Maintenance: Long axle restoration and crusher shaft turning.
Oil & Gas Infrastructure: Processing long drill collars, casing pipes, and drive spindles.
Steel & Metallurgical Mills: Turning heavy continuous casting rolls and mill drives.
Marine & Shipbuilding: Machining extended propeller shafts and rudder stocks.
Paper & Converting Machinery: Finishing long impression cylinders and guide rollers.
Heavy-Duty Structural Construction
Aged Cast Iron Foundation
Raw bed castings undergo natural thermal aging to relieve internal stresses. This prevents the long bed structure from warping or twisting over years of heavy shop use.
Precision Headstock & Gear Assembly
Internal transmission gears are heat-treated, profile-ground, and dynamic-balance tested to ensure smooth spindle rotation with minimal vibration.
Reinforced Guidance Ways
Bedways are ground on precision gantry planers. Hand-scraped sliding surfaces ensure complete oil film retention and tight fitting between carriage and bed.
Custom Lathe Configuration Options
Workpiece dimensions dictate machine build requirements. Every machine can be configured to match your specific production demands:
- Extended distance between centers up to 12 meters
- Increased swing capacities and deeper gap bed options
- Custom spindle bore sizes for hollow bar stock
- Motor upgrades for high-torque alloy cutting
- 3-jaw, 4-jaw, and faceplate workholding options
- Heavy roller steady rests for large-diameter shafts
- Metric or Imperial leadscrews and 2-axis or 3-axis Digital Readout (DRO) systems
Manufacturing Quality Control
Casting Integrity Inspection
Ultrasonic defect testing before machining bedways.
Guideway Accuracy
Micro-level surface finish and parallelism checks using precision laser alignment tools.
Spindle Balance Verification
Dynamic balance testing to prevent chatter marks during high-speed finishing.
24-Hour Load Testing
Every completed lathe undergoes continuous trial turning before packing.
Export Protective Packaging
Anti-rust grease coating, vacuum foil wrapping, and steel-braced wooden crate loading.
Direct Manufacturer Strengths
80 Years of Lathe Building Heritage
Decades of continuous manufacturing ensure time-tested designs, proven foundry casting techniques, and stable machine geometry.
In-House Foundry & Machining Facilities
Complete control over iron casting, bedway induction hardening, gear grinding, and final assembly guarantees structural reliability.
Global Technical Support
Direct factory access to original spare parts, clear operation manuals, and pre-shipment inspection documentation.
Factory-Direct Global Delivery
Every machine transitions securely from our assembly floor to international destination ports:
Raw Casting & Stress Relief Aging
Bedway Precision Grinding & Hand Scraping
Carriage, Headstock, and Tailstock Precision Alignment
Laser Geometry Verification & Trial Turning Test
Multi-Layer Anti-Rust & Waterproof Barrier Packaging
Secure Container Loading & Port Dispatch
FAQ
Machining Extended Workpieces on an Extra-Long Conventional Lathe?
Send your workpiece length, diameter, and material specifications to our engineering team. We will review your drawing and provide a matching lathe configuration proposal.
As one of the leading extra-long conventional lathe manufacturers and suppliers in China, our products have good reputation in the market. Please feel free to buy high quality extra-long conventional lathe made in China here from our factory. For price consultation, contact us.