4
Introduction
This user
’
s guide covers care and operation of the LittleMachineShop.com HiTorque 8½×20 Bench
Lathe. Be sure to read and understand the safety guidelines presented in this book before using
your lathe.
The HiTorque 8½×20 Bench Lathe is available in two models:
•
Model 7500 is the standard version.
•
Model 7550 is the deluxe version. It includes all the features of Model 7500 and adds:
o
Digital position readouts (DRO) on the carriage, cross slide, compound rest, and
tailstock
o
Quick change tool post set (QCTP) with five tool holders
o
Compound rest modified to better accommodate the QCTP
o
Anodized aluminum hand wheels and chrome knobs and levers
o
Full length heavy duty splash guard
Chris’ Tip: You can upgrade your Model 7500 lathe with the following
items available from
LittleMachineShop.com:
•
Part number 5497: Digital position readout (carriage, cross slide, and compound rest)
•
Part number 5513: Android tablet display
•
Part number 5880: Digital position readout (tailstock)
•
Part number 2280: Quick change tool post set, AXA
•
Part number 4914: Compound rest top (required for AXA QCTP)
•
Part numbers 4162, 4165, 2104, 2145: Chrome hand wheels and handles
Installation of these components creates a machine that functions like a Model 7550 deluxe lathe,
although it will have some cosmetic differences.
Specifications
Swing over bed
8.5" (215 mm)
Swing over
saddle
4.6" (118 mm)
Distance
between centers
20" (510 mm)
Cross slide travel 3.9" (100 mm)
Compound rest
travel
2.8" (70 mm)
Spindle through
hole
0.8" (20 mm)
Spindle taper
#3 Morse taper
Tailstock taper
#2 Morse taper
Spindle speed
100
–
2000 RPM
Range of threads 3
–
100 TPI; 0.25
–
5.0 mm
Longitudinal
power feed rates
0.0018" (0.045
mm)/revolution
0.0049" (0.126
mm)/revolution
Cross slide power
feed rates
0.0007" (0.019
mm)/revolution
0.0019" (0.048
mm)/revolution
Power
requirements
120 V 60 Hz 12 Amps
Spindle motor
output
1.34 hp (1000 Watts)
Machine weight
220 lbs (100 kg)
Overall
dimensions
40" x 22" x 16" (1010
mm x 550 mm x 400
mm)
Summary of Contents for HiTorque 7500
Page 40: ...40 Parts Diagram 7500 Model 7500 drawing 1...
Page 41: ...41 Model 7500 drawing 2...
Page 42: ...42 Parts Diagram 7550 Model 7550 drawing 1...
Page 43: ...43 Model 7550 drawing 2...
Page 47: ...47 Wiring Diagram...
