PBR T 30 Centre lathe

PBR T 30 CENTRE LATHE TYPE
The lathe has been designed and manufactured in accordance with the very latest electromechanical technology in order to ensure consistently high standards of turning, with maximum reliabílity, ease of operation and efficiency.
HEIGHT OF CENTRES
MAX. SWING
over bed
over cross slide
WIDTH OF BED
SADDLE
Length of slideways
Cross slìde travel
Top slide travel
SPINDLE
Cam-Lock nose size
Spindle bore
Morse taper in headstock sleeve
Spindle speed ranges
Speed range
Speed at constant power, 1 st range
Speed at constant power, 2nd range
Max permissible torque
MOTOR DR1VE
NUMBER OF THREADS
Metric pitches
Module pitches
Whitworth pitches
Diametral pitches
FEEDS (for each unit)
Longitudinal, cross and top slide
RAPID TRAVERSE
Longitudinal, cross and top slide
TAILSTOCK
Spindle diameter
Spindle Morse taper
Spindle travel
RESTS
Capacity of rest on bed
Capacity of rest on saddle
MAX PERMISSIBLE WEIGHTS
Overhanging (with centre of gravity at 200 mm. from the chuck surface)
Between centres, without steady
Between centres, with steady
WEIGHT OF THE MACHINE
with standard equipment
Distance between centres 1500 mm.
Distance between centres 2000 mm.
Distance between centres 3000 mm.
Distance between centres 4000 mm.
Distance between centres 5000 mm.
Distance between centres 6000 mm.

STANDARD EQUIPMENT
• Electrical equipment • A.C. three phase motor • Spindle guard with safety microswitch • Rapid traverse • Automatic longitudinal stops • Automatic
lubrication • Tool coolant system • Rest on bed • Rest on saddle • Bar support (for distance between centres longer than 3000 mm)
• Spindle taper sleeve • Two dead centres M.T. N. 5 • Automatic top slide feeds • Constant cutting speed • Set of spanners • lnstruction manual.

BED
The bed, of very rigid, double wall structure, is manufactured from Meehanite cast íron, submítted to a stabilízíng heat treatment. The bed slideways are induction hardened to approximately 450 Bńnnel hardness and ground. The gap has been elímínated for improved ńgídity, while large chip disposal openings ensure easy removal of the chips which are collected in the underlying chip pan.

APRON
All mechanísms for the longítudínal and cross feeds of the cross slide and top slíde are incorporated ín the apron. Reverse of movement is through a double electromagnetic clutch, which feeds are engaged by electromagnetic toothed clutches. Rapid traverses are powered by an electríc motor, íncorporatíng a safety flexible coupling. Thé case-hardened and hardened
gears and shafts are mounted on beańngs. Lubńcation is through an eccentríc-operated píston pump. Two safety microswitches prevent rotatíon of the handwheel during rapid traverses and
engagement of the leadscrew during turning. A multiple traverse límít swítch wíth relative tríp dogs provídes 5 automatic longitudinal stops. A selector swítch on the control panel enables semiautomatic turníng and thread cuttíng cycles to be performed.

SADDLE
The saddle consísts of a rugged, Meehanite cast iron construction, wíth ample bearing areas on the bed. The cross slide and top slíde ways are induction hardened and ground; moreover
they are adjustable wíth taper gibs. Movements are powered by adjustable screws and nuts, whíle they are read on large graduated verníer scales. A control permíts engagement of the
automatic feeds of the top slide, while a mícroswitch protects
agaínst engagement of the cross traverse control.

ELECTRICAL EOUIPMENT
The electrícal equípment, housed in a spray- and dust-proof cabínet, consísts of components supplíed by the most reputabl manufacturers and approved in accordance wíth internatíon standards. All controls are of the low voltage type. A program
mable logíc controller controls the machíne functíons. The electrícal equipment, which includes protective devices and circuít with safety ínterlocks, also contains the digítal drive controlling the main motor.
TAILSTOCK
The tailstock is mounted on preloaded bearings and can be moved along the bed by hand. Locking is by means of two tíe-rods connected to relative clamps. The tailstock body can be crosswise moved to perform operatíons with a slight taper. The taílstock spíndle, of high strength steel, is hardened, ground and honed, while its feed is read off a large vernier scale

AUTOMATIC CYCLES
The machine provided with a proper digital readout allows the automatíc execution of turning and thread cutting cycles (both internal and external).