Centerless Grinder - SC-18
The structural parts are manufactured from high quality cast iron, heat treated and stress relieved for maximum material stability without deformation.
The grinding wheel spindle and the regulating wheel spindle are precision machined from Nickel Chromolybedenum alloy steel (SNCM-220). Both spindles are subject to various heat treatments, making the machine ideal for heavy duty machining and high precision grinding.
The upper slide can be swiveled +5~-5
High precision micrometric feed adjustment in 0.001 mm.
The feed screw employs high precision ball screws, normalized and high frequency heat treated for maximum wear resistance.

  SC-18
Grinding diameter (standard) Ø1~Ø40 mm
Grinding diameter (special) Ø30~Ø60 mm
Grinding wheel size Ø445 x 205 x Ø228.6 mm
Regulating wheel drive 2HP x 6P Gear Box
 
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SPECIFICATIONS SC-18S
Grinding Wheel
Standard grinding range (Die.) Ø1~Ø80 mm
Capacity increases with special arrangement Ø40~Ø150 mm
Grinding wheel size (O.D. x width x I.D.) Ø455 x 205 x Ø228.6
Grinding wheel speed 1260 R.P.M.
Grinding wheel motor 20 HP
Regulating Wheel
Regulating wheel size (O.D. x width x I.D.) Ø255 x 205 x Ø111.2
Regulating wheel speed 10~300 R.P.M.(Variable)
Regulating wheel motor / S series 2.2 KW servo motor
Regulating wheel tilt angle +5~3
Regulating wheel swivel angle 5
Handwheel Graduation
Upper slide feed graduation 3.5 mm/rev. 0.05 mm/graduation
Upper slide micro-feed graduation 0.1 mm/rev. 0.001 mm/graduation
Lower slide feed graduation
9 mm/rev. 0.05 mm/graduation
Lower slide micro-feed graduation 0.2 mm/rev. 0.001 mm/graduation
Trimming device graduation 2 mm/rev. 0.01 mm/graduation
Drive Motors
Hydraulic pump motor 1 HP x 4P
Coolant pump motor 1/4 HP x 2P
Machine Dimensions 2200 x 1840 x 1530 mm
Net weight 3200 kgs
Gross weight 3500 kgs
Packing dimensions 2280 x 1940 x 1850 mm


Standard Accessories
. Regulating wheel and flange *1 set (mounted on machine)
. Grinding wheel and flange *1 set (mounted on machine)
. Infeed work rest and carbide blade *1 set
. Thrufeed work rest and carbide blade *1 set
. Standard electric equipment *1 set (mounted on machine)
. Oil tank *1 set (incl. oil cooling fan)
. Standard coolant system *1 set
. Diamond tools *2 pcs (mounted on machine)
. Work lamp *1 set (mounted on machine)
. Tool box and kits *1 set

Optional Accessories
. Wheel balancing stand and arbor
. Automatic infeed attachment
. Manual feeder for infeed grinding (up and down)
. Hydraulic work ejector (infeed grinding)
. Automatic loading attachment (thrufeed grinding)(Ø5-20mm, L100-600mm)
. Automatic feeder for thrufeed grinding (hopper type)(Ø2-8mm, L50-180mm)
. Automatic unloading attachment (thrufeed grinding)
. Supporter for long bar grinding
. Profile grinding attachment
. Magnetic coolant separator
. Coolant separator with paper filter
. Hydrocyclone coolant separator
. Auto. loading and unloading attachment (infeed grinding)
. Vibratory feeder (thrufeed grinding)
. Large work rest (thrufeed grinding)

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SIGMA MACHINERY CO., LTD.
No. 5, 37th Rd., Industrial Park Xie Tun District, Taichung 407, Taiwan
TEL:886-4-2359-8658 FAX:886-4-2359-8659
E-MAIL:sigmatop@xuite.net
http://www.sigmatop.com.tw
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