Myday Machinery Inc.


MYDAY MACHINERY INC. No.112-53, Cingguang Rd., Wurih Dist., Taichung City 41462, Taiwan.
Tel:886-4-2335-1313 #23
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Flat Bed Lathe

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4 Guide-way Giant Lathe

4 Guide-way Giant Lathe is a special type of flat bed lathe. It has one wide bed and 2 pairs of guide ways. Its tailstock and steady rests are placed on the pair of guide ways at the rear side. Thus, we would build the carriage across the 4 guide ways (called full length cross slide) as standard model; this model could stand for very heavy duty machining and has full cross slide travel.
Besides, we could build its carriage on one pair of guide way at the front side (called half length cross slide). In this option, the carriage wouldn’t interfere with steady rests and its tailstock; it’s very good at outer diameter machining at one time without removing steady rests.

4 Guide-way Giant Lathe Specifications
Description \ Model 3A-70 3A-80 3A-90 3A-100 3A-110
Center height 900 mm 1000 mm 1125mm 1250 mm 1375mm
Swing over bed 1800 mm (70") 2000 mm (78.7") 2250mm (88.6”) 2500 mm (98.4") 2700mm (106.3”)
Swing over cross slide:
Full Length (Std.)
1350 mm 1550 mm 1800 mm 2050 mm 2250 mm
Swing over cross slide:
Half Length (Opt.)
1530 mm 1720 mm 1870mm 2200 mm 2340mm
Width of bed 1345 mm (52.9”) (4 Guide Way)
Distance between centers 3000 mm ~ 12000 mm (120~480”)
Spindle bore / nose Ø210mm (8”) / A2-15
Spindle speed(4 Steps) 6~400 rpm (Chucks are excluded)
Tailstock quill diameter  Ø290mm Heavy Duty Rotary Quill
Taper of center  MT#7
Quill travel  300 mm
Cross feeds  0.056 ~ 0.96 ( 48 kinds )
Cross travel 1250 mm (Full Length) or 510mm (Half Length)
Longitudinal feeds 0.13 ~ 1.92 ( 48 kinds )
Compound rest travel X1: 250mm / Z1: 400mm (Auto Feeding)
Tool size  50 X 50 mm
Lead screw diameter Ø60mm
Lead screw pitch  2TPI (inch) or 12mm (metric)
Threading range, metric 2 ~ 30 mm / Pitch ( 48 Kinds )
Threading range, inch 1 ~ 15 TPI ( 48 Kinds )
Module pitch threads 1 ~ 15 m ( 32 Kinds )
DP. pitch threads 2 ~ 30 mm ( 48 Kinds )
Main spindle motor 75 HP (Std.) or 100 HP (Opt.)
Rapid motor 2 HP
Coolant pump 1 HP
Lubrication pump  12 W

Main Motor with Inverter 3-Jaw Chuck
Hydraulic Spindle Disk Brake 4-Jaw Chuck
Auto Lubrication System 4-Jaw Face Plate
Coolant System Steady Rest
4-way Tool Post Heavy Duty Steady Rest
Leveling Bolts & Pads Boring Device (only for Full-length Cross-slide)
6-way Rapid Traverse Digital readout
Metric / Inch Community Gear Box  
Tailstock Dead Center  
Tailstock Rotary Quill Ø290mm  
Motor-driven Tailstock  
Tool Box with Tools  
Operation & Service Manual  
Specifications are subject to change without notice for further design improvement.


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