Large Swing Extra Heavy-duty, Big Bore, Geared Head Lathes
Models LA50, LA54 & LA58 Lathes

50", 54" & 58" 
Swing Lathes

 
Overview
Clausing Large Swing Heavy-Duty Lathes are designed to provide optimum performance, heavy stock removal while providing the versatility required by a large range of industries such as: 
• general purpose machine shops 
• mining industry 
• paper mills 
• power utilities 
ll machines are tested to the most stringent accuracy and test cuts are made before shipping...
 
Construction

Electrical Equipment

    Siemens electrics, 230 3ph, 60Hz
    The electrical enclosure is sealed and the disconnect switch has a door interlock 
    Low 24 volt controls are used for added safety 

    All terminal blocks are shielded for added protection 

    Fused power supply and all motors have overload protection

Gear Box

    All gears are hardened to RC-45 and ground
    A wide range of feeds as well as Inch, Metric, Module and Diametric Pitch threads can be cut by simply changing the levers 
    Forced lubrication and a built-in safety clutch protects the universal gear box

Headstock and Spindle

    Extra heavy-duty, ribbed, thick wall casting provides superior rigidity for deep cuts
    All gears and spline shafts are tooled from high-quality steel, harden and ground and lubricated by an auto lube system 
    The spindle is supported by precision taper roller bearings 

    High torque 18 speed spindle is driven by a single speed drive motor and equipped with an electro-magnetic spindle brake

Carriage and apron

    Constructed of heavy-duty ribbed Meehanite casting for maximum rigidity
    The cross slideways are hardened and ground 
    The saddle slideways are covered with Turcite B to reduce friction 

    The cross-slide has a ballscrew 

    The gears in the apron are nitrate hardened 

    An independent lubricating system provides automatic lubrication to bedways and cross-slides 

    Asafety interlock is provided for automatic or rapid traverse of the carriage and cross-slide

Bed
    Extra wide, one piece bed from bedways to floor, is constructed of Meehanite casting for maximum rigidity
    The prestressed bedways are induction heat treated and ground for ware resistance 
    Up to 315" long in a one piece casting

Tailstock

    The tailstock quill is hardened to RC-45 and ground
    Motorized tailstock 
    Equipped with a 2-speed feed
 
Standard Equipment
    Siemens electrics, 230v. 3ph, 60Hz
    Large spindle bore 
    Electro-magnetic spindle brake 

    Full length splash guard 

    Coolant system 

    Automatic lubrication 

    Halogen work light 

    4 position stop 

    4 way tool post 

    6 way rapid traverse (LB & LE models) 

    4 way rapid traverse (LA models) 

    Thread indicator 

    Dual dials 

    Centers and center sleeve 

    Hardened and ground bedways 

    Motorized tailstock with 2 speed quill 

    Small and large steady rest 

    Combination 4 jaw independent on 4" and 6" bore machines 

    Tools, tool box, operation manual
 
Optional Equipment
    9" Spindle bore
    12" Spindle bore 
    Dual chuck option (factory installation) 

    Extra steady rest 

    Follower rest 

    Roller Bracket 

    5 degree manual spindle indexing 

    Taper attachment ±14 degrees 

    Quick change tool post 

    Micro stop 

    Hydraulic tailstock quill 

    Push button speed change 

    Chuck Guard 

    Saddle mounted chip guard 

    Telescopic leadscrew cover 

    208v. & 460v. transformer
 
Specifications
Model
LB50
LB54
LB58
MACHINE
      
Swing over bed
50"
54"
58"
Swing over cross slide
34.45"
38.4"
42.3"
Center height over bed
25"
27"
29"
Bed width
31.5"
31.5"
31.5"
Bed height
25.6"
25.6"
25.6"
Max. weight between centers (lbs)
15,620
15,620
15,620
Max. weight w/teady rest support (lbs)
24,640
24,640
24,640
Small steady rest capacity
11.8"-19.7"
11.8"-19.7"
11.8"-19.7"
Large steady rest capacity
19.7"-29.5"
19.7"-29.5"
19.7"-29.5"
SPINDLE
      
Front bearing diameter
8.66"
8.66"
8.66"
Spindle nose
A2-11
A2-11
A2-11
Spindle taper
MT5
MT5
MT5
Spindle nose (option on request)
-
-
-
Spindle bore (standard)
6"
6"
6"
Spindle bore (option #1)
9"
9"
9"
Spindle bore (option #2)
12"
12"
12"
Number of spindle speeds
18
18
18
Spindle speeds (standard, 3 ranges)
 
 
 
Low speed range (rpm)
7-35
7-35
7-35
Medium speed range (rpm)
35-195
35-195
35-195
High speed range (rpm)
230-700
230-700
230-700
Spindle speeds (option #1, 3 ranges)
 
 
 
Low speed range (rpm)
6-30
6-30
6-30
Medium speed range (rpm)
27-135
27-135
27-135
High speed range (rpm)
154-500
154-500
154-500
Spindle speeds (option #2, 3 ranges)
 
 
 
Low speed range (rpm)
6-30
6-30
6-30
Medium speed range (rpm)
30-150
30-150
30-150
High speed range (rpm)
170-400
170-400
170-400
CARRIAGE
 
 
 
Longitudinal feedrates (in/rev)
0.0032


- 0.096
0.0032


- 0.096
0.0032


- 0.096
Crossfeeds (in/rev)
0.0016


- 0.048
0.0016


- 0.048
0.0016


- 0.048
Metric threads (mm pitch)
1-120
1-120
1-120
Inch threads (tpi)
30-0.25
30-0.25
30-0.25
Module pitch thread (module)
1-120
1-120
1-120
Diametric pitch threads (dp)
30-0.25
30-0.25
30-0.25
Rapid traverse rate, longitudinal
236"/min
236"/min
236"/min
Rapid traverse rate, cross
236"/min
236"/min
236"/min
Crosslide travel
33.5"
33.5"
33.5"
Crosslide width
15.75"
15.75"
15.75"
Topslide travel
13.78"
13.78"
13.78"
Leadscrew dia.
2.5"
2.5"
2.5"
TAILSTOCK
 
 
 
Quill diameter
6.5"
6.5"
6.5"
Quill travel
6"
6"
6"
Tailstock quill taper
MT6
MT6
MT6
MOTOR AND ELECTRICS
 
 
 
*Main drive motor, 230v. 3 ph
40 hp
40 hp
40 hp
Rapid traverse motor
2 hp
2 hp
2 hp
Lube motor
1/3 hp
1/3 hp
1/3 hp
Coolant motor
1/4 hp
1/4 hp
1/4 hp
 
 
Dimensions
Model
A
B
C
D
E
F
Weight lbs
LB50-80
63"
170"
77.5"
46.5"
80"
69"
22,000
LB50-120
63"
210"
77.5"
46.5"
120"
108"
27,060
LB50-160
63"
248"
77.5"
46.5"
160"
148"
32,120
LB50-200
63"
288"
77.5"
46.5"
200"
187"
37,400
LB50-240
63"
327"
77.5"
46.5"
240"
227"
42,900
LB50-280
63"
366"
77.5"
46.5"
280"
267"
48,620
LB54-80
65"
170"
77.5"
46.5"
80"
69"
22,330
LB54-120
65"
210"
77.5"
46.5"
120"
108"
27,390
LB54-160
65"
248"