Reference Number: 126688

"NEW" TOS UNIVERSAL CENTRE LATHE 
MODELS: SN71C/1500, SN71C/2000, SN71C/3000, SN71C/4000
 
FEATURES
 - Small steady rest, (12-180mm) 1/2" - 7" capacity
 - Follow rest, (12-180mm) 1/2" - 7" capacity
 - "TOS" 3-jaw 12.5" (315mm) chuck (mounted)
 - Bronze nuts on lead screws
 - Rapid Traverse
 - Full rear splash guard
 - Halogen work Lamp
 - Automatic lubrication to carriage slide guideways
 - Hardened-precision ground bedways
 - All-geared headstock with hardened and ground gears and 
   spline shafts, anti-friction bearings and forced, 
   filtered oil circulation.
 - Spindle with American Standard D1-8 nose, supported in
   adjustable NNK Double row roller bearing and opposed 
   angular contact thrust bearings.
 - Multi-disc clutch and brake, for forward and reverse
   control
 - Quick change gearbox, completely enclosed, with oil
   circulation and a large number of feeds
 - Inch and metric thread cutting
 - Gap bed for extra swing and delta-beam section for 
   extreme twist resistance and easy chip disposal.
 - Single lever four way directional feed control on 
   carriage with adjustable safety feed clutches
 - Electro Dynamic Braking for Emergency Stopping

STANDARD EQUIPMENT
 - Complete N. American approved electrics for 220 or 460V,
   3 phase, 60 Hz
 - Coolant system attachment
 - Choice of T-slotted compound or 4-way tool turret
 - Chip tray
 - Driving plate
 - Two dead centres
 - Reducing sleeve for spindle
 - Set of change gears for 11.5, 13 & 27 t.p.i.
 - Threading dial
 - Leveling Screws 
 - Set of service tools
 - Operation and maintenance manual and precision test
   certificate

SPECIFICATIONS
Working Capacity:
Swing-over bed, (710mm)...................... in.  28
     -over cross, slide (420mm).............. in.  16.5
     -in gapr, (960mm)....................... in.  37.75
Distance between centers of SN71/1500........ in.  60
Distance between centers of SN71/2000........ in.  80
Distance between centers of SN71/3000........ in.  120
Distance between centers of SN71/4000........ in.  160
Maximum weight of workpiece, (1500 kg)....... lbs. 3306
Width of gap in front of faceplate, (300mm).. in.  11.81
Width of bed, (450mm)........................ in.  17.71
Main motor, (11 kw).......................... HP   15

Spindle:
Bore, (71 mm)................................ in.  2.79
Speeds - total number........................ #    16
Speeds - range (over two ranges)............. rpm  10 - 1000
Taper in sleeve.............................. MT   #5

Carriage:
Number of longitudinal and cross feeds....... #    38
- longitudinal feeds................. in/rev 0.002 - 0.242
- cross feeds........................ in/rev 0.001 - 0.012
Threads - metric............................. mm   0.5-40
Threads - witworth........................... t.p.i. 1-80
Leadscrew - diameter, (48mm)................. in.   1.89
Leadscrew - pitch............................ in.   1/4
Rapid traverse - cross, (1500mm/min)......... in/min 60
               - longitudinal (3000mm/min)... in/min 120

Tailstock:
Diameter of barrel, (90mm)................... in    3.54
Taper........................................ MT    #5
Travel of barrel, (240mm).................... in.   9.44

Machine Dimensions & Weight (approx.)
Length, with 60" centers..................... in.   138
Length, with 80" centers..................... in.   158
Length, with 120" centers.................... in.   197
Length, with 160" centers.................... in.   237
Width........................................ in.   57
Height....................................... in.   60
Weight with 60" center length................ lbs.  6515
Weight with 80" center length................ lbs.  6780
Weight with 120" center length............... lbs.  7330
Weight with 160" center length............... lbs.  7880


Optional Equipment:
- (LSR/SN/71)  Large Steady rest, 180-320 mm dia. 
- (SRS/SN/67/L) (SRS/SN/67S)  Set of roller sleeves for 
                              steady rests 
- (FJF71/8)    4-Jaw faceplate, 710 mm dia. (camlock D1-8) 
- (PFP71/8)    Plain faceplate, 710 mm dia. (camlock D1-8)
- (MLS/SN/67)  Micrometer length stop
- (MCS/SN/67)  Micrometer cross stop
- (TTA/SN/67)  Taper Turning Attachment (Installation extra)
- (IU400/3P)   "Tos" 3-jaw 400mm high accuracy chuck 
               (plainback)
- (FL400/8)    Flange (backplate) for chuck 400mm 
               (camlock D1-8)
- (LCMT5)      "SKODA" Live Centre, Morse taper no. 5