Precision and Versatility in Conventional Gear Head Lathes

Table of Contents

Precision and Versatility in Conventional Gear Head Lathes
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SUN MASTER® FC Series Gear Head Conventional Lathe Machine

The FC Series Gear Head Conventional Lathe Machine by SUN MASTER® is engineered to address the evolving demands of modern machining. Built with a one-piece solid stand, this series ensures both stability and durability, making it a reliable choice for workshops seeking consistent performance.

Model Range
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FC-1640
FC-1660
FC-1840
FC-1860
FC-1880
FC-2140
FC-2160
FC-2180

Key Features
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Universal Feed Gearbox & Reversible Apron: Each model is equipped with a universal feed gearbox and a reversible apron, enhancing versatility for a wide range of applications.
Robust Spindle Bore: An 80mm (3.149") spindle bore with ASA D1-8 standard ensures compatibility with various tooling options.
Hardened & Ground Cross Slide: The cross slide is treated for extended operational life, supporting reliable and precise machining.
CE Compliance: All models can be supplied to meet CE standards upon request, ensuring safety and quality.
Solid Construction: The bed ways are hardened and ground to a minimum of HRC48-55, and all castings are stabilized and stress relieved.
Noise Reduction: The design incorporates features for extremely low noise levels during operation.
Enhanced Usability: Includes a foot brake pedal, built-in coolant pump, and wider bed ways for vibration absorption.
Smooth Operation: Y-Δ type spindle motor ensures smooth start and operation.

Technical Specifications
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Model	FC-1640	FC-1660	FC-1840
Height of centers	205 mm (8.07")	231 mm (9.05")	271 mm (10.67")
Swing over bed	410 mm (16.14")	Ø462 mm (18.11")	Ø542 mm (21.34")
Swing in gap	583 mm (22.95")	Ø650 mm (25.59")	Ø730 mm (28.74")
Swing over cross slide	262 mm (10.3")	Ø305 mm (12")	Ø387 mm (15.23")
Distance between centers	1000 mm (40")	1500 mm (60")	2200 mm (86.6")
Width of bed	320 mm (12.5")
Spindle nose, internal taper	D1-8 / A1-8 (opt.), Ø85mm Taper 1/19.18
Spindle center sleeve	Ø85mm Taper 1/19.18 x MT. No.5
Spindle bore	Ø80mm (3.149")
Spindle speed (12 steps)	26, 40, 60, 90, 105, 145, 205, 305, 510, 715, 1000, 1500 rpm
Cross slide travel	250 mm (9.84")	300 mm (11.81")
Top slide travel	150 mm (5.9")
Whitworth threads	45 kinds / 2~72 T.P.I.
Metric threads	39 kinds / 0.2~14 mm
D.P. threads	21 kinds / 8~44 D.P.
M.P. threads	18 kinds / 0.3~3.5 M.P.
Longitudinal feeds	0.04~1.0 (0.0015"~0.04")
Cross feeds	0.02~0.5 (0.00075"~0.02")
Quill diameter	Ø59 mm (2.322")	Ø68 mm (2.677")
Quill travel	127 mm (5")	153 mm (6")
Taper of center	MT. No.4
Main spindle motor	std. 10 HP (7.5 kW), opt. 12.5 HP (9.375 kW)
Coolant pump	1/8 HP
Net weight	1750~2400 kg (varies by model)
Packing size (L x W x H)	2400~3700 mm x 1155 mm x 1900 mm

Specifications are subject to change without notice.

Standard Accessories
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Backplate for 10" chuck
Dead center MT.5
Dead center MT.4 with carbide tip
Spindle center sleeve (Ø85mm Taper 1/19.18)
Level pads (6 pcs)
Tool set & box
Operation manual & parts list
Full length splash guard
Halogen lamp

Optional Accessories
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3-Jaws scroll 10\ — 3-Jaws scroll 10" chuck

4-Jaws independent 12\ — 4-Jaws independent 12" chuck

Construction and Design Highlights
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All castings are stabilized and stress relieved for long-term durability.
Bed ways are hardened and ground to a minimum of HRC48-55.
Turcite B coating is applied between the bed and carriage for smooth movement.
Low noise operation is achieved through thoughtful engineering.
Foot brake pedal and built-in coolant pump are standard.
Wider bed ways help absorb vibration, enhancing machining accuracy.
Y-Δ type spindle motor ensures smooth starts and operation.

Component Details
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Headstock: Vibration-absorbent, deflection-free housing. Gears are hardened and MAAG or REISHAUER ground.

Gear Box: Universal type, supports a wide range of inch, metric, M.P., and D.P. threads without change gears.

Apron: R/H or L/H wheel available on request. Integrated automatic control for longitudinal & cross feeds, forward & reverse feeds.

Carriage & Slide: Anti-float design backlash eliminator in cross slide nut, safety clutch at feed shaft, one-shot lubrication, dual dials for inch system, metric dial for metric system.

Safety Features: Nylon safety gears in end train, shear pin in leadscrew.

Heavy Duty Spindle: Forged alloy steel, hardened, ground, dynamically balanced. Three-point support by high-grade precision taper roller and ball bearings.

The FC Series Gear Head Conventional Lathe Machine is designed to deliver a balance of innovation, reliability, and performance, making it a strong addition to any machining environment.