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M24-70-Series

Swing 70 in.
Center Distance 60 – 315 in.
Spindle Bore 6, 9, 12 & 15 in.
Bed Width 24 in.
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Overview
Features
Specs
Accessories

Overview

The big bore lathe is ideal for large pipe works in oil fields and big valves works. This series offers spindle bores up to 15” , center distance range from 60” to 315”. The machine bed is 24” wide. Double chucks are available for holding extra long and large work pieces.

  • Swing over bedways: 70″
  • Bet centers: 60″ – 315″
  • Spindle bore: 6″ standard, 9″, 12″, 15″, optional
  • Spindle motor: 30 HP, larger HP available
  • Bed width: 24″
  • Massive one- piece casting machine base

Product Video

Features

Customer's machine in use

  • Satisfied SHARP customer machining a large hook weighing 2,300 lbs on the SHARP Heavy Duty Big Bore lathe with a 50″ swing and a 160″ center and a 9″ Spindle bore.

Three points support headstock spindle

  • The headstock casting is designed with one ball bearing and two tapered roller bearings supporting the full length of the spindle shaft.
  • Spindle bore sizes are available in 6”, 9” and 12” , 15”
  • Gears and shafts are made from hardened and ground alloy steel, the spindle is made from forged, chrome alloy material.

Solid one piece casting base

  • The one piece casting bed is fully ribbed to prevent distortion under heavy cutting conditions. The base casting of the headstock is ribbed to withstand stress and distortion due to heavy machining conditions
  • The oversized 24” wide bedways are induction hardened and ground for long lasting accuracy.
  • An additional third bed way is provided on the front of the bed, giving extra support to the carriage during heavy cutting conditions

Double Chuck , Gear Box

  • The headstock can accommodate double chucks when necessary.
  • The fully enclosed quick change gear box allows easy change of wide range of inch, metric, MP and DP threads without exchanging gears.

Power Tailstock

  • Tailstock is equipped with a 2 step quill feed for ease of infeed. Large hand crank allows convenient positioning of tailstock.
  • For larger models, motorized quill feed and power drive tailstock units are available as options. (picture shows optional power driven tailstock unit

Specs

Capacity70120M70160M70200M70240M70280M
Swing Over Bed70.87 in.
(1,800.09 mm)		70.87 in.
(1,800.09 mm)		70.87 in.
(1,800.09 mm)		70.87 in.
(1,800.09 mm)		70.87 in.
(1,800.09 mm)
Swing Over Cross Slide58.66 in.
(1,489.9 mm)		58.7 in.
(1,490.9 mm)		58.7 in.
(1,490.9 mm)		58.7 in.
(1,490.9 mm)		58.7 in.
(1,490.9 mm)
Swing Over Gap87.8 in.
(2,230.12 mm)		87.8 in.
(2,230.12 mm)		87.8 in.
(2,230.12 mm)		87.8 in.
(2,230.12 mm)		87.8 in.
(2,230.12 mm)
Distance Between Centers120 in.
(3,048 mm)		160 in.
(4,064 mm)		200 in.
(5,080 mm)		240 in.
(6,096 mm)		280 in.
(7,112 mm)
Headstock70120M70160M70200M70240M70280M
Spindle Speed4-420 rpm 4-420 rpm 4-420 rpm 4-420 rpm 4-420 rpm
No. of Spindle Speeds16 steps 16 steps 16 steps 16 steps 16 steps
Spindle NoseA2-11A2-11A2-11A2-11A2-11
Spindle Bore6 in.
(152.4 mm)		6 in.
(152.4 mm)		6 in.
(152.4 mm)		6 in.
(152.4 mm)		6 in.
(152.4 mm)
Threads and Feeds70120M70160M70200M70240M70280M
Inch Threads, Number0.25-30 tpi, 700.25-30 tpi, 700.25-30 tpi, 700.25-30 tpi, 700.25-30 tpi, 70
Metric Threads, Number1-120 mm, 621-120 mm, 621-120 mm, 621-120 mm, 621-120 mm, 62
Modular Threads, Number0.25-30 MP, 530.25-30 MP, 530.25-30 MP, 530.25-30 MP, 530.25-30 MP, 53
Diametral Pitch Threads, Number1-120 DP, 701-120 DP, 701-120 DP, 701-120 DP, 701-120 DP, 70
Longitudinal Feeds0.0024-0.28 in/rev
(0.060-7.11 mm) 		0.0024-0.28 in/rev
(0.060-7.11 mm) 		0.0024-0.28 in/rev
(0.060-7.11 mm) 		0.0024-0.28 in/rev
(0.060-7.11 mm) 		0.0024-0.28 in/rev
(0.060-7.11 mm)
Cross Feeds0.0012-0.14 in/rev
(0.0304-3.55 mm/rev)		0.0012-0.14 in/rev
(0.0304-3.55 mm/rev)		0.0012-0.14 in/rev
(0.0304-3.55 mm/rev)		0.0012-0.14 in/rev
(0.0304-3.55 mm/rev)		0.0012-0.14 in/rev
(0.0304-3.55 mm/rev)
Leadscrew Pitch, Diameter2 tpi, 2.36 in. 2 tpi, 2.36 in. 2 tpi, 2.36 in. 2 tpi, 2.36 in. 2 tpi, 2.36 in.
Carriage70120M70160M70200M70240M70280M
Cross Slide Travel23.6 in.
(599.44 mm)		23.6 in.
(599.44 mm)		23.6 in.
(599.44 mm)		23.6 in.
(599.44 mm)		23.6 in.
(599.44 mm)
Compound Travel14.57 in.
(370.07 mm)		14.57 in.
(370.07 mm)		14.57 in.
(370.07 mm)		14.57 in.
(370.07 mm)		14.57 in.
(370.07 mm)
Compound Width31.5 in.

(800.1 mm)		31.5 in.
(800.1 mm)		31.5 in.
(800.1 mm)		31.5 in.
(800.1 mm)		31.5 in.
(800.1 mm)
Bed70120M70160M70200M70240M70280M
Bed Length 193 in.
(4902.2 mm)		232 in.
(5,892.8 mm)		272 in.
(6,908.8 mm)		350 in.
(8,890 mm)		350 in.
(8,890 mm)
Bed Width24 in.
(609.6 mm)		24 in.
(609.6 mm)		24 in.
(609.6 mm)		24 in.
(609.6 mm)		24 in.
(609.6 mm)
Tailstock70120M70160M70200M70240M70280M
Quill Diameter4.53 in.
(115.06 mm)		4.53 in.
(115.06 mm)		4.53 in.
(115.06 mm)		4.53 in.
(115.06 mm)		4.53 in.
(115.06 mm)
Quill Travel12 in.
(304.8 mm)		12 in.
(304.8 mm)		12 in.
(304.8 mm)		12 in.
(304.8 mm)		12 in.
(304.8 mm)
Quill Center TaperMT #6 MT #6 MT #6 MT #6 MT #6
General70120M70160M70200M70240M70280M
Spindle Motor30 HP
(22.37 Kw)		30 HP
(22.37 Kw)		30 HP
(22.37 Kw)		30 HP
(22.37 Kw)		30 HP
(22.37 Kw)
Approximate Weight24,200 lbs.
(10976.9 Kg) 		26,400 lbs.
(11,974.8 Kg) 		28,600 lbs.
(12,972.7 Kg)		31,900 lbs.
(14,469.5 Kg)		33,000 lbs.
(14,968.5 Kg)
Dimensions16.73x6.72x6.16 ft.
(5.09x.04x1.87 M)		20x6.72x6.16 ft.
(6.09x2.04x1.87 M)		23.29x6.72x6.16 ft.
(7.09x2.04x1.87 M)		319x80.7x74 in.
(26.58x6.72x6.16 M)		358x80.7x74 in.
(29.83x6.72x6.16 M)

All specifications subject to change without notice. Please call to verify.

Accessories

Standard Accessories

  • 16 Spindle speed
  • 2 stage spindle start up
  • Headstock oil bath system
  • Electro magnetic brake
  • Lubrication system
  • Coolant system
  • Manual tailstock
  • Steady rest 16”
  • Work lamp

Optional Accessories

  • 3 jaw chuck, different sizes
  • 4 jaw chuck, different sizes
  • Steady rest, larger sizes
  • Follow rest, different sizes
  • Face plate with 4 jaws, different sizes
  • Rear chuck adapter
  • 40 HP, 50 HP in lieu of 30 HP motor
  • Taper Attachment
  • Digital Readout System
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