Craven 1842 x 15000 Heavy-Duty Lathe Machine

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Condition:  excellent 

Machine Capacities

Height of Centres: 1842 mm

Maximum Distance between Centres: 15240 mm

Overall lenght of Bed: 21457 mm

Width over Bed Shears: 4267 mm

The maximum load on Centres: 100 tons

Angle of Centres: 90°

Maximum Swing in Diameter over Saddles: 3251 mm

Number of Front Saddles: Two

Number of Rear Saddles: One

Number of Auxiliary Screwcutting Slides: One

Number of Auxiliary Milling Attachments: One

Number of Auxiliary Grinding Attachments: One

Headstock Front Spindle Bearing: 610 x 1016 mm

Headstock Rear Spindle Bearing. 379 x 610 mm

Headstock Faceplate Diameter: 3353 mm

Maximum Gripping Diameter Externally: 3099 mm

Minimum Gripping Diameter Externally: 216 mm

Maximum Gipping Diameter Internally: 3518 mm

Minimum Gripping Diameter Internally: 635 mm

Maximum Capacity of open type Pad Stay: 1400 mm

Minimum Capacity of open type Pad Stay: 600 mm

Maximum Load in open type Pad Stay: 75 tons

Maximum Capacity of Stationary Stay: 813 mm

Minimum Capacity of Stationary Stay: 381 mm

Maximum Load in Stationary Stay: 50 tons

Maximum Capacity of Open Type Roller Stay: 2540 mm

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Minimum Capacity of Open Type Roller Stay: 508 mm

Maximum Load in Open Type Roller Stay: 80 tons

Number of Headstock Spindle Speed Changes: Four

Spindle Speeds (four infinitely varible ranges) in r.p.m.:

0,8 to 2,4

2,02 to 6,1

5,2 to 15,7

13,3 to 40

Maximum Horse power Available at: 8 r.p.m (approx) and upwards

Number of Feed changes for Front and Rear Saddles: Six

Sliding Feeds (infinitely variable per minute): 0,8 to 387 mm

Surface Feeds (infinitely variable per minute): 0,4 to 192 mm

Front Top Slides Feeds (infinitely variable per minute): 3/4 Surfacing Feed

Screwcutting with Selsyn Rest: 1 to 25 mm pitch

Traverse of Front Top Slides: 813 mm

Traverse of Rear Top Slide: 229 mm

Traverse of Top Slide on Screwcutting Rest: 1010 mm

AUXILIARY MILLING ATTACHMENT

Number of Milling Spindle Speed Changes:Six

Range of Milling Spuindle Speeds: 40 to 400 r.p.m.

Milling Feeds (infinitely variable):

Longitudinal: 0,8 to 387 mm/minute

Traverse: 0,4 to 192 mm/minute

Milling Feeds to top Slide (infinitely variable): 0,4 to 192 mm/minute

AUXILIARY GRINDING ATTACHMENT

Maximum Diameter to be Ground: 2388 mm

Grinding Spindle Speed: 800 r.p.m.

Size of Grinding Whell: 24" dia. x 10" bore. x 2" wid

Periphery Speed at 24" dia.: 5027 ft/min.

ELECTRIC MOTORS

Main Driving Motor: 100 H.P. at 900 to 300 r.p.m.

Tailstock Traverse Motor: 5 H.P. at 1400 r.p.m.

Tailstock Locking Motor: 3 H.P. at 1400 r.p.m.

Saddle Feed and Quick Traverse Motors: 3 H.P. at 1500 to 500 r.p.m. (3 off)

Selsyn Transmitter on Headstock: 2^1/2 H.P.

Selysn Receiver motor on Screwcutting Rest: 2^1/2 H.P.

Grinding Head Spindle Motor: 5.H.P. at 1400 r.p.m.

Milling Head Spndle Motor: 5.H.P. at 1400 r.p.m.

oil Pump Motors for Headstock & Spindle Lub.: (2 off) each 1 H.P.

Oil Pump Motors for Saddle & Apron Gearing: (3 off) each 1/6 H.P.

Slideway Flushing pumps: (3 off) each 1/6 H.P.

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