SIP Societe Genevoise MP-4G Vertical Jig Borer

The SIP Societe Genevoise MP-4G Vertical Jig Borer is a high-precision machine known for its exceptional accuracy, primarily used for highly accurate drilling, boring, and reaming operations. Key specifications include a table size of around 24" x 30" and a wide range of spindle speeds. 

General Specifications

• Machine Weight: Approximately 6750 lbs (3050 kg) net.
• Dimensions (Overall): Around 80" (2035 mm) wide x 82" (2080 mm) front-to-back.
• Power: Typically powered by a 3 h.p., 3-phase motor.
• Accuracy: Capable of achieving extremely high accuracy, with a maximum permitted eccentricity at the spindle nose of just 0.00008" (0.002 mm) at the time of testing.
• Measuring System: Uses an optical measuring system with standard scales for high precision location. 

Capacity and Travel

• Table Size: 24" x 30" (approx. 610 mm x 762 mm). Some sources list 27-3/4" x 23-1/2".
• Longitudinal Travel (X-axis): 26" or 20" (approx. 660 mm or 508 mm) depending on configuration.
• Cross Travel (Y-axis): 22" or 24" (approx. 558 mm or 610 mm) depending on configuration.
• Max Part Height (Z work height): 33" (approx. 838 mm).
• Quill Travel: 7" (approx. 178 mm). 

Spindle Details

• Spindle Speeds: A wide range of 20 speeds from 50 rpm up to 2000 rpm.
• Spindle Taper: Features a No. 4 Morse taper bore, and also a SIP 4e taper on the outside.
• Spindle Motor Power: 3 h.p.. 

Standard and Optional Accessories

The machine was designed to accommodate various accessories to enhance its versatility: 

• Plain and tilting rotary tables (PD, PI, Rotoptic models)
• Electric jig grinder
• Micro-precision boring heads
• Coolant system built into the main body of the machine