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Manufacturing & Metalworking

Process Equipment

Process Equipment Article

A grinding machine is a machine tool used for producing very fine finishes or making very light cuts, using an abrasive wheel as the cutting device. This wheel can be made up of various sizes and types of stones, diamonds or of inorganic materials. For machines used to reduce particle size in materials processing see grinding.

Construction

The grinding machine consists of a power driven grinding wheel spinning at the required speed (which is determined by the wheel.s diameter and manufacturer.s rating, usually by a formula) and a bed with a fixture to guide and hold the work-piece. The grinding head can be controlled to travel across a fixed work piece or the workpiece can be moved whilst the grind head stays in a fixed position. Very fine control of the grinding head or tables position is possible using a vernier calibrated hand wheel, or using the features of NC or CNC controls.

Grinding machines remove material from the workpiece by abrasion, which can generate substantial amounts of heat; they therefore incorporate a coolant to cool the workpiece so that it does not overheat and go outside its tolerance. The coolant also benefits the machinist as the heat generated may cause burns in some cases. In very high-precision grinding machines (most cylindrical and surface grinders) the final grinding stages are usually set up so that they remove about 2/10000mm (less than 1/100000 in) per pass - this generates so little heat that even with no coolant, the temperature rise is negligible.

Process Equipment Items

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TWO 1/8" CLEAR ACRYLIC LEXAN POLYCARBONATE SHEETS
$5.99
Swagelok, Gyrolok 1/8"MPTx 1/8" Tube Connectors
$24.99
IMPULSE 8" HEAT BAG SEALER ~ $.01 START BID~ NO RESERVE
$9.50
Biodiesel 2" ID clear PVC static mixer, process mixer
$60.00
ASCO REDHAT BRASS VALVE BODY 2/2 *SPARE* AIR WATER SAVE
$9.99
2" 150# Flg. Stainless Steel ITT Diaphragm Valve
$150.00
THREE (3) PLEXIGLASS ACRYLIC SHEETS CLEAR 1/16"
$5.99
SILICONE STRIPS HIGH TEMP 1/2" THICK
$19.99
4 oz. Can IPS Weld-On # 4 ABS Acrylic Cement Weldon 4
$9.90
Swagelok fitting 1/2 by 1/2 brass union
$60.00
Resina S-30 Automatic Capper - Capper shoot end
$499.99
EITEL STRAIGHTENING PRESS MODEL: RP-16
$2999.99
Plexi glass Clear Acrylic Sheet 1" thick 12"x12" NEW
$19.99
STUDER, RHU SERIES, INTERNAL GRINDING ATTACHEMENT
$3499.99
21092 UHMW: PINK 2 1/2" dia x 2 1/4" - 4" x 10 pcs
$9.99
21119 PVC type 1; 1-13/16" x 2-1/8" x 19" long
$19.99
Thermolyne lab stir plate with speed controls
$200.00
New Piston Depositor filler Filling Machine (16 oz)
$799.99
21084 UHMW: PINK 2 1/4" dia x 3 1/4" - 4 3/4" x 12 pcs
$9.99
Tech pump(new)
$0.99
Used Dorr Oliver rotary vacuum filter
$12000.00
Swagelok/Gyrolok Tube Elbows Assortment
$24.99
Spiral Grip Pallet Wrapper, Has Issues, Used
$275.99
Donaldson Torit Dust Collector, Baghouse style
$1.00
Carbon Steel Double Ribbon Blender , 13 Cubic Foot
$2000.00
Swagelok male 90 316 ss
$175.00
1/2" 2000# Threaded Actuated SS Ball Valve
$20.50
TWO (2) 3/16" PLEXIGLASS ACRYLIC SHEETS CLEAR LEXAN
$5.99
20742 Acetal gray 3" dia x 11-3/4" long
$29.99
Used BAC Cooling Tower model FXT 47 BACross Wet Deck
$2800.00
WINTERS 35Psi AIR PRESSURE GAUGE *BRAND NEW* 4.5"DIAL
$9.99
SHEET OF SILICONE HIGH TEMP (CLEAR) 1/32 THICK"
$39.00
Hyson nitrogen manifold
$1.00
21010 HDPE natural; 3/16" x 9 7/8" x 23 1/4" x 2 pcs
$8.99
WASHER & GASKET CUTTER , CUTS UP TO 12" ROUND
$23.99
1500 TON Plastic Injection Molder Molding Machine _1990
$20000.00
1/2" H D Baumann Mikroseal Packless 316SS Control Valve
$75.00
FISHER CONTROLS GAS REGULATOR S208 BRAND NEW!
$240.00
850 Gallon Vertical Stainless Steel Tank
$1000.00
Torit dust collector mdl 75-80 cloth filter dust drawer
$1925.00
SHEET OF NEOPRENE 1/16 ( 36" X 36")
$14.99
Swagelok, Gyrolok 1/4"MPTx 1/2" Tube Fittings
$24.99
Asco Red Hat Valve No Reserve!!!
$1.00
Polypropylene marine plastic sheet 3/4" 13.5" x 9.25"
$3.50
(15pc.) 4" Type 304 Stainless Steel RFSO Flanges
$450.00
fiberglass tank
$600.00
Swagelok / Gyrolok 3/8" Tube Valves
$24.99
1 gallon stainless steel double planetary lab mixer
$1300.00
Swagelok / Gyrolok 3/8" Needle Valves
$24.99
ENFIELD ENFUSION PIPE FUSING ELECTROFUSION FUSION WELD
$395.00
2 Diagraph Industrial Label Printer Applicator Labelers
$499.99
1/8 INCH COPPER MIRROR ACRYLIC SHEET 15 x 30 NEW
$9.95
Label-Aire Model 2111 Pressure Sensitive Labeler
$4000.00
liquid carbonic cleaning blasting critical HYDRO-PAC
$4999.00
Busch Rotary Vane Vacuum Pump. Model RC0250
$6650.00
New Pallet Stretch Wrapper (2 year warranty) crate Incl
$3895.00
fiberglass tank
$1100.00
Dillon Hand Crank Dynamometer 10,000 pound capacity
$900.00
1/3 HP Lightnin Air Mixer, Model NAG-33
$727.00
1" Threaded Worcester Actuated Bronze Ball Valve
$19.99
Nettco SGB-075 3/4HP Mixer Stirrer Baldor Motor
$124.99
ITT- Pur-Flo- 1/2" S/S-Teflon, Diaphragm Valve - 1" T/C
$9.99
Micro Motion DL 065 Mass Flow Sensor
$69.95
swagelok union 90 316ss
$75.00
VICTOR VTS-400-E 2-Stage Brass Regulator CGA-580
$9.99
Montalvo tension controller X-3000P-ce-RW
$5.00
Asco Red Hat Valve No Reserve!!!
$1.00
1" x 36" BRAIDED STAINLESS STEEL FLEX HOSE
$54.00
P/A INDUSTRIES VALVE NO. 12022-80, NEW
$10.00
BOARD, CIRCUIT INDEV CONTROL 1700-082 REV A PL-41002
$100.00
1/2" 150# Flg.Jamesbury Actuated SS Ball Valve
$49.99
1" 150# Flg. ITT Dia Flo Actuated SS Diaphragm Valve
$150.00
ALMOND COLORED PLEXIGLASS ACRYLIC SHEET 23 x 40 NEW
$14.00
Swagelok / Gyrolok 1/4" Needle Valves
$24.99
Hopper Elevator Feeder for Bottles, Caps or Parts
$3600.00
Swagelok/Gyrolok Tube Unions Assortment
$24.99
Nylatron Plastic
$30.00
20734 ABS black 3/16" x ~20 1/2" x ~24" x 3 pcs
$19.99
LARGE POLYCARBONATE PIECE 3/8'' Thick Hyzod sheet
$7.50
VERIFLO 11500865 2-Stage Brass Regulator CGA-580
$9.99
Biodiesel 2" ID clear PVC static mixer, process mixer
$30.00
Brookfield viscometer model RVT. On helipath stand.
$200.00
CENTER GRINDER AB MODEL: ZSM-150
$4999.99
25 gallon stainless steel hemi bottom kettle Jacketed
$1300.00
Ashcroft Air Pressure Guage 100psi 2c572
$30.00
21088 UHMW: PINK 2 1/4" dia x 3 1/4" - 4 1/2" x 12 pcs
$9.99
Swagelok, Gyrolok 1/8" Tube Unions
$24.99
19555 PVC type 1 Disk 3/4" thick x 10 3/8" dia x 2 pcs
$18.99
Conair Franklin Vacuum Timer Hopper Feeder A+ Deal
$299.99
Rexroth 5003 Prop Amp Card Pressure Control Van Dorn
$49.00
Promass 63 Transmitter and Promass A Sensor for Gases
$600.00
Swagelok/Gyrolok Tube Tees Assortment
$33.00
100PC Parker Mini Butt weld to Vacuseal Gland 4-4V1M-SS
$495.00
TEFLON DISCS .020 THICK PLUS FEED THRU'S PUNCHES!!!!!
$24.99
1" thick Black UHMW Plastic sheet 4pcs
$13.12