ROBINS
Precison Equipment 38 Years
Cylinder Head Valve Seat and Guide Machine Utilizing Fixed Carbide Centering Pilots.
Great choice for shops repairing Heavy-duty industry, performace products, domestic, import, and motorcycle style cylinder heads. Can be tooled to suit the type of shop you operate.
SG8M
(1) Machine work head floats on air cushion for precision centering
(2)R1 taper 3.150″ (80mm) hardened and ground spindle with 8″ (200mm) of hand wheel travel
(3) Rapid and fine feed mechanism for precise spindle feed
(4) Work head tilts 15 degrees in both directions
(5) Spindle rotation speed infinitely variable from 40-450rpm
(6) Rpm two modes, variable speed set by operator or HP mode, 2 fixed rpm’s to achieve maximum results at higher cutting speeds.
(7) 2 led work lights – either side of the spindle giving shadow less view of valve seat area
(8) Tool storage cabinet with three drawers, mounts on the machine and swivels for ease of use
(9) Digital electronic level for quick, precise alignment of fixed carbide pilots
(10) C-frames holder kit for heads that roll over fixture is not able to clamp. 2-piece frame, adjustable for different length heads
(11) Built in vacuum tester complete, kit includes hose and pads
SG8M
Machine weight 2650 lbs
Cylinder head length capacity with manual 360 degree roll over fixture 44″ (1120mm) and 52″ (1270mm) with optional fixtures
Space requirement with tool cabinet mounted: length 74″, depth 34″, height 80″ (1880 x 864 x 2032mm)
Paint color (White)
Electrical requirements: 208-240v, 15a, 50/60hz, 1 hp
Shipping weight 2850 lbs. (1224kg)
Shipping dimensions: 39 x 59 x 83″ (991 x 1499 x 2108mm)
Cylinder Head Valve Seat and Guide Machine Utilizing Fixed Carbide Centering Pilots.
Great choice for shops repairing performace products, domestic, import, and motorcycle style cylinder heads. Can be tooled to suit the type of shop you operate.
SG7M
(1) Maximum cylinder head length when used with optional fixtures below, 32″ (812mm)
(2) Machine work head floats on air cushion for precision centering.
(3) R1 / V1 taper 2.19″ (56mm) hardened and ground spindle with 6.700″ (170mm) of hand wheel travel.
(4) Quick change tool retention system for fast location over pilot and accurate centering (patented)
(5) Steering wheel for rapid feed for precise valve seat depth and finish.
(6) Work head tilts 15-degrees in both directions for canted valve guides.
(7) Two led work lights – either side of the spindle giving shadow less view.
(8) Built in vacuum tester, kit includes hose and quick change pads.
(9) Tool storage cabinet with three drawers, mounts on the machine and swivels.
(10) Variable speed 40 – 440 rpm (60 hz)
SG7M
Weight of machine 1345 lbs (610kg)
Machine dimensions w/ tool cabinet 66″w x 40″d x 78″h (1676mm x 1016mm x1981mm)
Max cylinder head size 32″w x 10″d x 5″h (812mm x 254mm x 127mm)
Workhead X travel 29.500″ (749mm)
Spindle motor 3/4 hp
Cylinder Head Valve Seat and Guide Machine Utilizing Fixed Carbide Centering Pilots.
Great choice for shops repairing performace products, domestic, import, and motorcycle style cylinder heads. Can be tooled to suit the type of shop you operate.
SG7M
(1) Maximum cylinder head length when used with optional fixtures below, 23″ (812mm)
(2) Machine work head floats on air cushion for precision centering.
(3) R1 / V1 taper 2.19″ (56mm) hardened and ground spindle with 6.700″ (170mm) of hand wheel travel.
(4) Quick change tool retention system for fast location over pilot and accurate centering (patented)
(5) Steering wheel for rapid feed for precise valve seat depth and finish.
(6) Work head tilts 10-degrees in both directions for canted valve guides.
(7) One led work lights – either side of the spindle giving shadow less view.
(8) Built in vacuum tester, kit includes hose and quick change pads.
(9) Tool storage platform with 2 shelves, mounts on the left side of machine.
(10) Powerful, able to make wide bowl or chamber cuts, see photo to the left
(11) Variable speed 80 – 500 rpm (60 hz)
SG5M
Weight of machine 900 lbs (500kg)
Machine dimensions w/ tool cabinet 41″w x 30″d x 73″h (1,041mm x 762mm x1,84mm)
Max cylinder head size 23″w x 10″d x 5″h (584mm x 254mm x 127mm)
Workhead X travel 18.200″ (462mm)
Spindle Z travel 5.750″ (146mm)
Spindle motor 3/4 hp
Variable speed spindle 80 – 500 rpm (60 hz)
Bench Model Valve Grinding Machine w/Variable Speed Premier Ball Chuck.
The grinding accuracy produces a tolerance of two tenths or less valve after valve, job after job with an excellent finish.
For shops who already have a cabinet or bench they want to use.
VR5P
(1) Quick action air operated chuck using six high precision ball system.
(2) High precision tool steel VACUUM HARDENED chuck system.
(3) Dove tail hardened slide ways.
(4) Motor controller converts single phase incoming power to 3 phase main grinding motor.
(5) Variable valve rotation speed up to 250rpm.
(6) Butt grinding and chamfering device including micrometer and adjustable v-nest.
(7) Main wheel & butt wheel dressing devices mounted on the machine.
(8) Main grinding wheel 7″ (180mm) diameter general purpose. Other wheels for Stainless & Titanium are available and sold separately.
(9) Diamond for dressing main grinding wheel.
(10) Butt grinding wheel 3″ (75mm) diameter.
(11) Diamond for dressing butt grinding wheel
(12) Tools and wrenches including chuck servicing assembly tool.
(13) Quick interchangable chuck system.
SPECIFICATIONS
Valve stem diameter range .157″ to .551″ (4mm to 14mm) – optional chucks available .137” to .2795” (3.5mm to 7.1mm & 11mm to 20mm)
Electrical requirements: VR5P available in 2 versions: 115v, 20a, 60 Hz, 1ph or 230v, 10a, 50 Hz, 1ph. Voltage must be specified when ordering a machine.
Shipping weight: 420lbs (191kgs)
Standard & Optional SG Tooling
SG Machine Image Gallery
Solid Carbide Pilots Sample
Available range 3.5mm to 12mm
SG8 / Roll-Over Fixture
Shown with Tool Caddy, Profile Insert Sharpner, Vacuum Tester
SG8
Heavy-duty head with out board clamps & parallels
Leveling Devices
Electronic level, simple vial level, dual canted valve level & general shop level
Tooling
Setting micrometers & runout indicators
Profile Sharpening Devices
Super lap (left) Separate mounted sharpener (right)
Tooling
Left to right: Quick change spindle adaptor, large profile cutter body, regular profile cutter body & mini body profile cutter body.
Canted Valve Guide Level
SG8 Control Panel
Shown with Electronic Level
SG5 Small Head Producer
V-6 / V-8’s & motor cycle heads
SG Optional Tool Sharpener
Quick profile sharpener
Super Lap
More time required but produces mirror finish. Less expensive option over tool sharpener
Economical SG5
SG5 with 360 degree roll-over fixture, BB Chevrolet
SG Tool Caddy
3 drawer caddy available available SG7 & SG8
Clamping Adaptors SG Series
SG7
Capacity 32″
SG7
SG7 with 360 degree roll-over fixture
SG8
360 degree fixture w/c-clamps adaptors allowing some import heads to be mounted with max rigidity.
Ball Drive Adaptor & Twin Bladed Profile Cutter
Used to drive seat pocket cutters heads & special order twin bladed 3-angle seat profile cutters heads, shown here. (Special Order Only)
SG8 Tooling
Quick change adaptor
SG8
Simple in-line fixture for parallel diesel cylinder heads
SG8
Handling small heads as well!
SG8 Super Seat Finish
Robins SG8
SG8 test cut
SG8
Robins SG8
SG5
Heavy test cuts
Precision Tooling
Fixed precision dual carbide seat counterboring heads with replaceable inserts.
Core Dril Reamer Adaptor
Core drill & reamers adaptor. Available for 3/8″ & 1/2″ tool shanks
Chuch & Adaptor
Micrometer
Used to setup adjustable seat pocket tooling or THxxx-00 holders for cutting old seats out of cylinder head in preparation for new seats
Run-out Gage
Available in .0005″ & .0001″ graduations
Carbide Pilot Removing Tool
available in both 9mm & 6mm shank carbide pilots
Tool Storage
SG7
SG7 with 360 degree roll-over fixture
Recently Engine Rebuilder published an article regarding valve seats & guides some might find useful & informative.