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Comprehensive Overview of CH Series Gear Head Manual Engine Lathes

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Robust Engineering and Versatile Performance: CH Series Gear Head Manual Engine Lathes
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SUN MASTER® Brand of CH Series Gear Head Manual Engine Lathe Machine

The CH Series Gear Head Manual Engine Lathe Machine is designed to deliver reliable performance and adaptability for a wide range of turning applications. This series is available in multiple models to suit various operational needs:

  • CH-2260 / 2290 / 22120 / 22160 / 22200
  • CH-2660 / 2690 / 26120 / 26160 / 26200
  • CH-3060 / 3090 / 30120 / 30160 / 30200

Technical Specifications
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Model CH-2260 / 2290 / 22120 / 22160 / 22200 CH-2660 / 2690 / 26120 / 26160 / 26200 CH-3060 / 3090 / 30120 / 30160 / 30200
Swing over bed 560 mm (22") 660 mm (26") 760 mm (30")
Swing in gap Ø797 mm (31.37") Ø892 mm (35.11") Ø990 mm (38.97")
Swing over cross slide Ø340 mm (13.38") Ø445 mm (17.51") Ø548 mm (21.57")
Gap width in front of faceplate 270 mm (10.63") 270 mm (10.63") 270 mm (10.63")
Distance between centers 1500 mm (60"), 2300 mm (90"), 3000 mm (120"), 4000 mm (160"), 5000 mm (200") 1500 mm (60"), 2300 mm (90"), 3000 mm (120"), 4000 mm (160"), 5000 mm (200") 1500 mm (60"), 2300 mm (90"), 3000 mm (120"), 4000 mm (160"), 5000 mm (200")
Width of bed 400 mm (15.75") 400 mm (15.75") 400 mm (15.75")
Top slide travel 228 mm (8.98") 228 mm (8.98") 228 mm (8.98")
Cross slide travel 400 mm (15.75") 400 mm (15.75") 400 mm (15.75")
Spindle nose type D1-11 D1-11 D1-11
Spindle center sleeve MT#7 x MT#5 MT#7 x MT#5 MT#7 x MT#5
Spindle bore Φ104 mm (4.094") Φ104 mm (4.094") Φ104 mm (4.094")
Spindle speed 12 steps 12 steps 12 steps
Speed range (60 Hz) 13, 20, 30, 47, 70, 105, 150, 230, 340, 530, 800, 1200 RPM 13, 20, 30, 47, 70, 105, 150, 230, 340, 530, 800, 1200 RPM 13, 20, 30, 47, 70, 105, 150, 230, 340, 530, 800, 1200 RPM
Whitworth threads kinds / range 44 kinds / 2 ~ 72 T.P.I. 44 kinds / 2 ~ 72 T.P.I. 44 kinds / 2 ~ 72 T.P.I.
Metric threads kinds / range 39 kinds / 0.2 ~ 14 mm 39 kinds / 0.2 ~ 14 mm 39 kinds / 0.2 ~ 14 mm
Diameter of leadscrew Φ45 mm (1.77") Φ45 mm (1.77") Φ45 mm (1.77")
Pitch of leadscrew 4 TPI, P = 6 mm 4 TPI, P = 6 mm 4 TPI, P = 6 mm
Longitudinal feeds Metric: 0.035 ~ 0.98 mm/rev; Inch: 0.0012 ~ 0.039/rev Metric: 0.035 ~ 0.98 mm/rev; Inch: 0.0012 ~ 0.039/rev Metric: 0.035 ~ 0.98 mm/rev; Inch: 0.0012 ~ 0.039/rev
Cross feeds Metric: 0.011 ~ 0.296 mm/rev; Inch: 0.0004 ~ 0.0117/rev Metric: 0.011 ~ 0.296 mm/rev; Inch: 0.0004 ~ 0.0117/rev Metric: 0.011 ~ 0.296 mm/rev; Inch: 0.0004 ~ 0.0117/rev
Quill diameter Φ80 mm (3.15") Φ80 mm (3.15") Φ80 mm (3.15")
Quill travel 250 mm (10") 250 mm (10") 250 mm (10")
Taper of center MT #5 MT #5 MT #5
Main spindle motor Std.: 15 HP (11.25 kW), Opt.: 20 HP (15 kW) Std.: 15 HP (11.25 kW), Opt.: 20 HP (15 kW) Std.: 15 HP (11.25 kW), Opt.: 20 HP (15 kW)
Coolant pump 1/6 HP 1/6 HP 1/6 HP
Net weight (KG) 60": 2860, 90": 3310, 120": 3545, 160": 4150, 200": 4600 60": 2950, 90": 3400, 120": 3635, 160": 4240, 200": 4690 60": 3040, 90": 3490, 120": 3725, 160": 4330, 200": 4780
Packing size length 3255 mm (128.14"), 4055 mm (159.64"), 4755 mm (187.2"), 5755 mm (226.57"), 6755 mm (265.94") 3255 mm (128.14"), 4055 mm (159.64"), 4755 mm (187.2"), 5755 mm (226.57"), 6755 mm (265.94") 3255 mm (128.14"), 4055 mm (159.64"), 4755 mm (187.2"), 5755 mm (226.57"), 6755 mm (265.94")
Width x Height Width: 1150 mm (45.27"); Height: 1700 mm (66.9") Width: 1150 mm (45.27"); Height: 1700 mm (66.9") Width: 1150 mm (45.27"); Height: 1700 mm (66.9")

Specifications are subject to change without notice.

Standard Accessories
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  • Backplate for 12" chuck
  • Dead center MT.5
  • Dead center MT.5 with carbide tip
  • Spindle center sleeve MT#7, MT#5
  • Level pads (6 ~ 10 pcs)
  • Tool set & box
  • Operation manual & parts list
  • Full length splash guard
  • Halogen lamp

Optional Accessories
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Key Features
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  • All castings are stabilized and stress relieved for durability.
  • Bed ways are hardened and ground to a minimum of HRC48-55.
  • Operates with extremely low noise levels.
  • Equipped with a foot brake pedal for safety.
  • Wide bed ways absorb vibration for stable operation.
  • Y-Δ type spindle motor ensures smooth start and operation.
  • Adjustable oil distributor for lubricating bedways and cross slide.
  • Automatic and manual forced lubrication pump for bedways and cross slide.
  • Dual braking system: mechanical and electrical, for rapid spindle stop.
  • 3V sliding ways enhance displacement stability and processing smoothness.

Engineering Highlights
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Rugged Headstock
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  • Forced lubrication to all running points.
  • Head housing offers excellent vibration dampening and deformation resistance.
  • Robust construction for extra rigidity and heavy-duty cutting.
  • All gears and shafts are hardened and precision ground.

Universal Gearbox
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  • Wide range of inch and metric threads without gear changes for convenience.
  • Hardened gears with oil bath lubrication.

Heavy Duty Spindle
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  • Camlock type spindle.
  • Precision machined from forged alloy steel, hardened, ground, and dynamically balanced.
  • Three-point support with high precision taper roller and ball bearings eliminates chatter during heavy cutting.

Apron
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  • Manual and automatic lubrication system for sliding ways and bedways.
  • Choice of right or left hand wheel.
  • Overload protection device to prevent machine damage.

Rugged Tailstock
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  • Quill graduated in inch and metric scales.
  • Tang slot for positive tool drive.
  • Two-step tailstock for smooth operation.

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