DELTA 23-725 8-Inch Industrial Grinder

DELTA 23-725 8-Inch Industrial Grinder
by Delta

List Price: ~~$300.65~~
Category: Tools
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Product Details

Manufacturer: Delta
Model: 23-725
Product features:

Friable, aluminum oxide wheel for high-speed steel tools
Slow, 1,725 RPM speed reduces heat while grinding
Shatterproof eyeshields safeguard operator-feets eyes
Conveniently placed water tray is always there when you need it for cooling the workpiece
Adjustable spark deflectors, sturdy wheel guards and removable side plates provide increased operator safety Sturdily constructed tool rests adjust horizontally and vertically, and tilt for exact grinding angle desired

Accessories:

Description of DELTA 23-725 8-Inch Industrial Grinder

The DELTA 23-725 8-Inch Industrial Grinder is constructed with a 120-volt, 0.75 HP motor with a slow speed of 1,725 RPM to reduce heat while grinding. The grinder also includes a friable, aluminum oxide wheel suitable for working on high-speed steel tools. A flexible lamp provides optimum visibility while you work. Adjustable tool rests move horizontally, vertically, and tilt to achieve your exact desired grinding angle. Operator safety is ensured by the machine's superior shatterproof eye shields, adjustable spark deflectors, removable side plates, and wheel guards. The steel wheel guards include built-in dust ports for quick cleanup with a metal dust collector. An easy-to-reach water tray allows you to immediately cool tools as you work.

Tools and Hardware Reviews of DELTA 23-725 8-Inch Industrial Grinder

Customer Review: Professional grade 8" grinder
Summary: 5 Stars

Because my prior [high-speed] grinders too easily overheated metal parts, I now prefer slower speed machines. Wheels turning at a slower speed are less likely to disintegrate since there's less centrifugal force, so this machine should be somewhat safer than a 3450-RPM grinder. All things being equal, a 3450 RPM grinder will remove material faster, but the motor on this 1725 RPM grinder is so powerful, to remove material faster, just press harder.

The 23-725 is big and heavy. In spite of Amazon and Delta claiming this is a 100 lb. device, the box it came in weighed "only" 82 pounds - so the machine probably weighs about 79 pounds. That's still plenty heavy. The wheels are 15.75" from wheel center to wheel center; it's 10.75" to the top of the motor housing; 19" wide not counting the eye shields, 12" to the top of the wheel housing; 11.4" deep without the water tray, and 12.75" deep with the water tray.

The cast iron motor frame, tool rests & tool-rest brackets, plus the four large rubber feet, keeps vibration within the acceptable range, and gives the tool a look and feel of quality and heft. The tool-rests are rock-solid.

The toggle switch is protected, so it's unlikely you'll accidentally turn it on, a good safety feature. The lift-off water tray is amply sized. The fitted lamp is quite nice and the gooseneck section is about the right length. At the rear of each wheel's housing is an inward facing 1 3/4" dust port for a vacuum hook-up. As an alternative, a rubber-banded sock over each port seems to catch most of the grit. The grinder comes with a wheel-dressing tool.

The box said Made in Taiwan. Many years ago that might have been an indication of lower quality, but it seems to me that this tool looks good enough to have said Made in the USA.

As a point of reference, the Sears Craftsman 8" professional grinder (model # 21158, Internet or catalog only) looks nearly identical but costs slightly more (not counting tax & shipping), is a 3450 rpm machine, and doesn't come with an aluminum oxide wheel.

If you already own a grinder, consider retrofitting your old machine with wire wheels and/or buffing wheels.

This Delta is a professional grade grinding machine. I've had the 10" version of this grinder (Delta 23-735, now discontinued) for a couple of years, and have used it countless times. Perhaps that's the ultimate accolade; I liked the 10" model so much, I bought this one for my son.

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