CD6251 Conventional Lathe Machine | 20″ × 60″ (510 × 1500 mm), 80 mm Spindle Bore

CD6251 Conventional Lathe Machine | 20″ × 60″ (510 × 1500 mm), 80 mm Spindle Bore

The CD6251 Reliable Conventional Lathe Machine features a 510 mm swing over bed, 1500 mm center distance, 80 mm spindle bore, and 5.5 kW main motor. Designed for medium-duty turning, threading, boring, and general metal machining.

Product Specifications

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Product Overview

The CD6251 Conventional Lathe Machine is a reliable manual metal turning machine designed for medium-duty machining, general production, repair, and maintenance applications. With a 510 mm swing over bed, 1500 mm center distance, 80 mm spindle bore, and 5.5 kW main drive motor, it provides a practical combination of workpiece capacity, rigidity, and machining flexibility.

The machine is built with a precision-ground lathe bed and a 300 mm wide bed structure to provide stable support during turning operations. Its 80 mm spindle bore, ISO-D8 spindle nose, and MT7 spindle taper provide a solid configuration for general metalworking applications.

This conventional lathe machine is suitable for external turning, internal turning, facing, boring, threading, grooving, and other manual machining operations. The CD6251 is particularly suitable for shafts, flanges, gears, bushings, sleeves, rollers, and general mechanical components.

Swing Over Bed:
510 mm (20.1″)
Center Distance:
1500 mm (60″)
Spindle Bore:
80 mm (3.15″)
Main Motor:
5.5 kW

Key Features of the Conventional Lathe Machine

  • 510 mm Swing Over Bed: The large swing capacity provides sufficient clearance for medium-sized and relatively large cylindrical workpieces.
  • 1500 mm Center Distance: The long center distance accommodates shafts, rollers, cylinders, and other elongated workpieces.
  • 80 mm Spindle Bore: The large spindle bore allows suitable bars, shafts, pipes, and tubular workpieces to pass through the spindle.
  • 300 mm Wide Bed: The wide machine bed provides stable support for the carriage and tailstock during turning operations.
  • 12-Step Spindle Speed: The spindle speed range of 25–1700 rpm provides flexible speed selection for different materials, diameters, and cutting operations.
  • 5.5 kW Main Drive Motor: The main motor provides the drive power required for general turning and machining applications.
  • Wide Threading Capability: The machine supports metric, inch, module, and diametral thread ranges for different machining requirements.
  • Manual Metal Turning: Direct operator control makes the machine suitable for repair workshops, maintenance departments, job shops, and general production.

Technical Specifications

Specification ItemMetric UnitImperial Unit
ModelCD6251/1500CD6251/1500
Machine TypeConventional Horizontal LatheConventional Horizontal Lathe
Max. Swing Over Bed510 mm20.1″
Max. Swing Over Cross Slide320 mm12.6″
Max. Swing Over Gap740 mm29.1″
Effective Length of Gap165 mm6.5″
Center Distance1500 mm60″
Bed Width300 mm11.8″
Spindle Hole80 mm3.15″
Spindle NoseISO-D8ISO-D8
Spindle TaperMT7 (1:20)MT7 (1:20)
Spindle Speed25–1700 rpm, 12 steps25–1700 rpm, 12 steps
Max. Travel of Top Slide128 mm5.0″
Max. Travel of Cross Slide285 mm11.2″
Max. Tool Shank Size25 × 25 mm0.98 × 0.98″
Longitudinal Metric Feeds42 kinds, 0.031–1.7 mm/rev42 kinds
Longitudinal Inch Feeds42 kinds, 0.0011–0.0633 in/rev42 kinds
Cross Metric Feeds42 kinds, 0.014–0.784 mm/rev42 kinds
Cross Inch Feeds42 kinds, 0.00033–0.01837 in/rev42 kinds
Metric Threads41 kinds, 0.1–14 mm41 kinds
Inch Threads60 kinds, 2–112 T.P.I.60 kinds
Module Threads34 kinds, 0.1–7 M.P.34 kinds
Diametral Threads50 kinds, 4–112 D.P.50 kinds
Tailstock Sleeve Diameter60 mm2.36″
Tailstock Sleeve TaperMT4MT4
Tailstock Travel130 mm5.12″
Main Drive Motor5.5 kW7.4 HP
Coolant Pump Motor90 W0.12 HP
Packing Size295 × 115 × 175 cm116.1 × 45.3 × 68.9 in
Net / Gross Weight1850 / 2150 kg4079 / 4740 lb

Machine Structure & Turning Features

  • Precision-Ground Bedways: Precision-ground bedways provide stable carriage movement and support consistent turning performance.
  • Rigid Cast Iron Bed: The cast iron bed provides a stable foundation for machining and helps absorb vibration during cutting.
  • 80 mm Spindle Bore: The large spindle opening accommodates suitable bars, shafts, pipes, and tubular workpieces.
  • ISO-D8 Spindle Nose: The ISO-D8 spindle nose provides a standard configuration for the machine’s spindle and workholding system.
  • Wide Threading Range: Metric, inch, module, and diametral thread ranges provide flexibility for different machining requirements.
  • Vertical Four-Station Tool Post: The listed machine configuration uses a vertical four-station tool post for convenient tool positioning.

For general information about machine guarding and safe operation, see the

OSHA Machine Guarding Guide
.

Typical Conventional Lathe Applications

Shaft & Roller Turning

The 1500 mm center distance provides useful capacity for turning shafts, rollers, pins, cylinders, and other elongated components.

Flanges & Gears

The 510 mm swing over bed provides sufficient clearance for flanges, gears, discs, sleeves, and other medium-sized components.

Repair & Maintenance

The manual configuration makes the machine suitable for repair workshops, maintenance departments, job shops, and general mechanical manufacturing.

Free Equipment

Installed on the Lathe

  • Work lamp
  • Coolant system
  • Thread-cutting dial
  • 3-jaw chuck (Φ250 mm)
  • Full-length splash guard
  • Steady rest and follow rest
  • Foot brake and brake ribbon

Included Inside the Package

  • Oil gun
  • Paddings
  • Change gears
  • 450 mm face plate
  • 4-jaw chuck (Φ250 mm)
  • Dead centre and centre sleeve
  • Complete spanner set and tool box
  • Operation manual

Optional Accessories

  • Drive plate
  • Rapid travel
  • Live centre (MT4)
  • Drill chuck set (MT4)
  • Taper cutting function
  • 2-axis SINO digital readout
  • 3-axis SINO digital readout
  • Italy-type quick-change tool post
  • USA-type quick-change tool post
  • Europe-type quick-change tool post
  • CE conformity package including chuck guard, toolpost guard, and leadscrew guard
  • Cutting tool holder set (7 pcs or 9 pcs)

Final accessories and configuration should be confirmed according to the quotation and customer’s machining requirements.

Related Lathe Machines

Explore our complete

Lathe Machine Product Range

for conventional and CNC turning solutions.

For automated programmed turning applications, see our

CNC Flat Bed Lathe Machines
.

For more conventional turning solutions, explore our

Conventional Lathe Machines
.

Power Supply & Machine Configuration

The CD6251 electrical configuration should be confirmed according to the customer’s destination-country requirements. Voltage, frequency, main motor configuration, coolant pump configuration, and other electrical specifications should be confirmed before production.

Customers should provide their local power supply specification when requesting a quotation so that the machine can be configured correctly for installation and operation.

Factory Quality Assurance & Technical Support

  • Pre-Shipment Inspection: Machine operation, spindle rotation, feed movement, workholding components, and major mechanical functions are checked before shipment.
  • Machining Verification: Trial turning and machine operation can be verified according to the agreed inspection requirements before delivery.
  • Technical Support: ZCIT provides technical assistance, spare parts support, and online service after delivery.

Frequently Asked Questions About the Conventional Lathe Machine

Q: What type of machine is the CD6251?
A: The CD6251 is a conventional horizontal lathe machine designed for medium-duty turning, general machining, repair, maintenance, and production applications.

Q: What is the maximum swing over bed?
A: The maximum swing over bed is 510 mm.

Q: What is the center distance?
A: The CD6251/1500 has a 1500 mm center distance.

Q: What is the spindle bore?
A: The machine has an 80 mm spindle bore with an ISO-D8 spindle nose and MT7 spindle taper.

Q: What spindle speed range does the CD6251 have?
A: The spindle speed range is 25–1700 rpm with 12 speed steps.

Q: What types of threads can the machine cut?
A: The machine supports metric, inch, module, and diametral thread ranges according to the listed specifications.

Q: Is the CD6251 a CNC lathe?
A: No. The CD6251 is a conventional manual lathe rather than a CNC-controlled lathe.

Q: Can digital readouts be added?
A: Yes. 2-axis and 3-axis SINO digital readouts are available as optional accessories.

Need a Reliable Conventional Lathe Machine?

Send us your workpiece diameter, length, material, weight, drawings, or machining requirements. Our team can help you confirm the suitable spindle bore, chuck, steady rest, tooling, digital readout, motor configuration, and machine specifications.

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FAQ

1. Quality Control & Inspection

Q: How do you ensure machine precision before shipment?

A: Every machine undergoes laser interferometer calibration, sample trial cutting, and a 72-hour continuous operation test. Full inspection reports and pre-shipment videos are provided before dispatch.

Q: What are your accepted payment terms?

A: We accept T/T (Telegraphic Transfer). Standard payment terms are a 30% deposit upon order confirmation, with the remaining 70% balance due prior to shipment.

Q: What is the estimated lead time for delivery?

A: Standard models are shipped within 20 to 30 days after deposit receipt. Customized machines or special configurations take 30 to 60 days depending on specs.

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