Large Heavy-Duty Horizontal Lathes Retrofit Accuracy Restoration Chuck Upgrading

• Customization: Available
• After-sales Service: Provided
• Warranty: Provided
• Type: Horizontal Lathe
• Processing Accessory: Chuck CNC Lathe
• Guide Rail: Horizontal Guide Rail
• Tool Holder: Single-tool Holder CNC Lathe
• Power Source: Electric
• Controlling Mode: CNC
• Automatic Grade: Semiautomatic
• Setting Mode: Floor-type
• Precision: Precision
• Certification: CE, RoHS, ISO 9001
• Condition: Used
• Transport Package: Customized
• Specification: Customized
• Trademark: YOGIE
• Origin: Luoyang, China
• Package Size: 400.00cm * 200.00cm * 200.00cm
• Package Gross Weight: 3000.000kg

Product Description

Product Description

The core goal of retrofit for heavy-duty horizontal lathes is to improve the machining accuracy, automation level and stability of large-diameter, long-shaft parts. The common retrofit directions include CNC upgrading, precision restoration, heavy-duty cutting performance enhancement and automation supporting. This solution is suitable for processing heavy workpieces such as rolls, wind power main shafts and large transmission shafts.

Details Images

Spindle System Retrofit (Core Component)

Accuracy Restoration: Replace with P2/P4-class heavy-duty angular contact ball bearings or double-row cylindrical roller bearings and re-preload them; regrind the spindle taper hole (usually Morse taper No.6 or above) to control the radial runout ≤ 0.005mm and axial runout ≤ 0.003mm.
 
Torque Enhancement: Upgrade the spindle motor power (with a 20%-30% margin reserved), install a spindle oil cooling/water cooling system to reduce thermal deformation during heavy-load machining; if indexing function is required, install a C-axis servo indexing device to achieve 360° arbitrary indexing.
 
Chuck Upgrading: Replace the conventional chuck with a heavy-duty hydraulic self-centering chuck featuring adjustable clamping force. It is suitable for workpieces with a diameter of φ500mm or above, improving clamping stability.

Retrofit of Guide Rail and Feed System

Guide Rail Treatment: The guide rails of heavy-duty horizontal lathes are mostly cast iron sliding guide rails. For slight wear, wear-resistant coating pasting + manual scraping is adopted (contact accuracy ≥ 85%). In case of severe wear, replace them with heavy-duty linear rolling guide rails equipped with anti-overturning sliders to meet the requirements of heavy-load feeding.
 
Lead Screw Upgrading: Replace with C3-class heavy-duty ball screws (diameter ≥ φ80mm) and conduct pre-tensioning treatment to eliminate thermal deformation. Install a double-nut backlash elimination mechanism to control the backlash ≤ 0.01mm.
 
Servo Matching: Select high-torque AC servo motors (torque ≥ 200N·m) equipped with planetary reducers to improve low-speed feeding rigidity and avoid the "crawling" phenomenon during heavy-load machining. Adopt full-closed-loop linear scales (resolution: 0.001mm) to achieve high-precision positioning.

Demand Grade	Recommended System	Application Scenario
Economy-class	GSK 980TDc, KND K2000T	Machining of simple heavy-duty shafts and discs, prioritizing cost-effectiveness
Mid-to-high-end	FANUC 0i-TF Plus, SIEMENS 828D	Machining of large-pitch threads and complex curved surfaces, requiring high precision and stability
High-end Customized	FANUC 31i, SIEMENS 840D sl	Multi-axis linkage (e.g., turn-mill compound machining) and intelligent machining, suitable for heavy-duty parts in aerospace field

Relevant Retrofit Projects

1.CNC Boring Machine Retrofit

2.Vertical lathe retrofit

3.grinding machine retrofit

Company Profile

FAQ

Q:What is your minimum order quantity and warranty?
A:MOQ is one set, and warranty is one year.
Q:How can I choose the most suitable machines ?
A:Please let us know your machining demand or machine size ,we can choose the best model for you , or you can choose the exact model by yourself. You can also send us the products drawing ,we will choose the most suitable machines for you .
Q:What is the payment Terms ?
A:T/T ,50% initial payment when order ,50% balance payment before shipment ; Irrevocable LC at sight .
4.Can your company send the technical personnel to our company and direct our workers for free?
A:When the machine arrive the buyer's installation site, we timely send mechanical and electrical engineers to install according to the buyer's schedule, the buyer undertakes board and lodging of personnel abroad in the process of installation, and also USD200.00 per day per person. The seller will cooperate with the buyer to deal with visa and installation preparation before going abroad.