Robins Machines

SG 12 and SG 12 Smart

Description

The SG 12 and SG 12 Smart are precisely designed for engine rebuilding specialists focused on machining cylinder heads across a broad spectrum of heavy-duty applications. Designed to accommodate everything from single-cylinder heads to large six-cylinder, fourteen-valve configurations, this machine is ideal for engines used in natural gas, mining, aviation, construction, and marine industries.

Incorporating Robins’ precision fixed-pilot design, the SG 12 and SG 12 Smart deliver exceptional valve seat machining with minimal runout, achieving micron-level concentricity and a chatter-free finish. Its robust clamping system and full 360-degree head rotation allow seamless access to all sides of large 24-valve cylinder heads, optimizing workflow efficiency. Additionally, the SG 12 and SG 12 Smart are engineered to handle intricate machining operations, including injector tube replacement, precision drilling and tapping, and the repair of damaged studs and threads, making it an essential tool for high-precision cylinder head reconditioning.

SG 12 Smart: The Robins SG8 seat and guide machine incorporates all its proven features, now upgraded with an intuitive touch-screen software interface, providing streamlined and user-friendly machine operation.

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Product Details

Product Details

Specifications

Machine weight 3637 lbs (1650 kg)
Max cylinder head size 47″w x 15″d x 10″h (1193mm x 381mm x 254mm)
Work head travel 42.000″ (1066 mm)
Spindle stroke 8.400″ (213 mm)
Spindle stroke 2.0 HP
Variable speed spindle 30 - 500 rpm (50 hz)
Spindle tilt ± 15 Degrees

Features

  •  Spring free tooling
  • High precision three angle cutting tools
  • Quick change tool retention system for fast location over pilot and accurate centering (patented)
  • Eliminates bounce springs
  • CVS Constant-Variable-Speed feature, variable spindle speed
  • Reverse RPM for tapping
  • Machine work head floats on air cushion for precision centering
  • Steering wheel for rapid feed for precise valve seat depth and finish
  • Two LED work lights – either side of the spindle giving shadow less view
  • Built in vacuum tester, kit includes hose and quick change pads

Working Accuracy

  • Valve seat roundness: 0.0001” (2.0 µm)
  • Valve seat to honed-guide concentricity: 0.0002” (5.0 µm)

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Compare model Specs

Current Model
Model:SG 12 and SG 12 Smart
Machine weight3637 lbs (1650 kg)
Max cylinder head size47″w x 15″d x 10″h (1193mm x 381mm x 254mm)
Work head travel42.000″ (1066 mm)
Spindle stroke8.400″ (213 mm)
Spindle stroke2.0 HP
Variable speed spindle30 - 500 rpm (50 hz)
Spindle tilt± 15 Degrees
Comparison Model
Model: SG 5.1
Machine weight1340 lbs (608 kg)
Max cylinder head size23″ x 10″ x 5″ (584 mm x 254 mm x 127 mm)
Work head travel18.200″ (462 mm)
Spindle stroke5.750″ (146 mm)
Spindle stroke0.75 HP
Variable speed spindle70 - 570 rpm (60 hz)
Spindle tilt± 10 Degrees
Model: SG 7.1
Machine weight1653 lbs (750 kg)
Max cylinder head size32″w x 10″d x 5″h (812 mm x 254 mm x 127 mm)
Work head travel29.50″ (749 mm)
Spindle stroke6.700″ (175 mm)
Spindle stroke0.75 HP
Variable speed spindle50 - 440 rpm (50 hz)
Spindle tilt± 15 Degrees
Model: SG 8 and SG 8 Smart
Machine weight2866 lbs (1300 kg)
Max cylinder head size40″ x 12″ x 6″ (584 mm x 254 mm x 127 mm)
Work head travel42.000″ (462 mm)
Spindle stroke8.400″ (146 mm)
Spindle stroke2.0 HP
Variable speed spindle30 - 500 rpm (50 hz)
Spindle tilt± 15 Degrees