Concrete Grinder, Electric 24″
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General Equipment SG24 Surface Grinder
Dual‑Head Concrete Grinder • Heavy Coating Removal • Professional Surface Prep
The General Equipment SG24 is a powerful, dual‑head surface grinder engineered for aggressive concrete grinding, leveling, and coating removal. Built for demanding commercial and industrial applications, the SG24 delivers exceptional productivity with its twin counter‑rotating heads, heavy‑duty cast construction, and high‑torque industrial motor.
Designed for contractors working across Hawaiʻi — from Oʻahu commercial renovations to Maui industrial flooring — the SG24 provides fast material removal, smooth operation, and consistent results on concrete, terrazzo, and masonry surfaces.
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Key Features
- Dual counter‑rotating grinding heads for balanced, aggressive removal
- 24″ grinding width for high‑productivity surface prep
- Heavy‑duty cast aluminum chassis for durability
- Magnetic accessory retention for fast tooling changes
- High‑torque industrial motor for demanding applications
- Adjustable operator handle for comfort and control
- Integrated vacuum port for dust‑control compliance
- Compatible with diamond, carbide, PCD, and stone tooling
Ideal Applications
- Heavy coating and mastic removal
- Concrete leveling and smoothing
- Surface prep for epoxy, overlays, and tile
- Commercial and industrial flooring projects
- Warehouse, retail, and renovation work
| SURFACE GRINDERS | |
| MODEL | SG24/E |
| POWER SOURCE | |
| Type | Lesson 2 hp (1492 W), totally enclosed, fan cooled, capacitor start, 3450 RPM, single phase, 115/230 VAC, 60 hz, electric motor. Operating voltage is selected by manual switch |
| Fuel Specification | n/a |
| Starting Method | n/a |
| Air Cleaner | n/a |
| Electric Motor Full Leaded Amperage (FLA) Rating | 16.8 amperes at 115 VAC, 60 hz
8.4 mperes at 230 VAC, 60 hz |
| Electric Motor Starting Power Required (SPR) (SPR)=(FLA) x 5 Factor | 84 amperes, 9.6 kW at 115 VAC
42 amperes, 4.8 kW at 230 VAC |
| Minimum Circuit Breaker Amperage Required | 20 amperes at 115 VAC
10 amperes at 203 VAC |
| FRAME | |
| Structure | Unitized, welded steel plate |
| Drive System | Dual B series V-belt/pulley and spur gear reduction system. Engine powered units also utilize a centrifugal clutch assembly. Gear operate in a fully enclosed transmission case and are lubricated by a high temperature transmission grease formulated with an extreme pressure EP additive. The EP additive allows the grease to better cling to the gear teeth at high rotational speeds. |
| Transmission Bearings | High capacity, self aligning ball bearing units are sealed for maximum dust protection and equipped with Zerk® type fittings for field lubrication |
| Counter-Rotation Discs | two aluminum, counter-rotation, design for direct mounting of all popular General® and EDCO® multi-accessory attachments with the PLAS-T-LOK™plastic wedge or standard wood wedge. Rotation direction of each disc is marked for easy reference |
| Discs Rotation Speed | 250 RPM |
| Discs Flexing System | Twelve (six per side) Lord® type elastomeric bushing designed to flex at controlled rates and allow the multi-accessory disc to follow irregularities in the surface profile. The bushing also help prevent damage too the transmission gears and shafts in the event the multi-accessory attachment comes in direct contact with an above surface obstruction. Bushings are easily replaced in the field with simple tools |
| Operator Handle Height Adjustment | Three positions to accommodate variance in operator height. Adjustment procedure requires only simple hand tools. |
| Frame height Adjustment | Three positions to accommodate variances in multi-accessory attachments. Adjustment procedure require only simple hand tools |
| GENERAL | |
| Overall Width (With Protective Bumper) | 27 1/2″ (699 mm) |
| Normal Operator Handle Height | 38″ (965 mm) |
| Overall length | 55 1/4″ (1403 mm) |
| Nominal Multi-Accessory Disc Working Width | 24″ (610 mm) |
| Weight (Less Multi-Accessory Attachment And Safety And Dust Shield Assembly | 205 lbs. (114 kg)
|
Safety Note
Operators must wear eye protection, hearing protection, and a respirator. Always connect a dust‑control vacuum to reduce silica exposure. Disconnect power before changing tooling.
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