Product News: Portable Tools, Machinery & Machining Tools

Front-Loading Large-Part Honing Machine handles job shop volumes.

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Press Release Summary:

July 25, 2013 - With 760 mm X-axis, 1,500 lb weight capacity, and 508 mm stroke length, SV-20 offers true linear, vertical, servo-stroking system to produce precision bore geometries on parts. PLC-controlled machine is equipped with¬†variable-speed (15–550 rpm), 5.5 hp spindle motor capable of driving 2-stage, metal-bond, diamond abrasives. Linear stroking system keeps honing tool concentric with bore throughout full stroke length, producing consistent diameter from top to bottom of bore.

Sunnen Products Co.

7910 Manchester Ave., St. Louis, MO, 63143, USA

Original Press Release

New Large-Part Honing Machine for Job-Shop Volume Drives Diamond Abrasives with a Linear Vertical Stroke for Ideal Bore Geometry

Press release date: July 1, 2013

760-mm X-axis, 680-kg weight capacity and 508 mm stroke length offer large-part capacity. Ideal for job shops or repair facilities handling oil/gas components, cylinder liners, motorcycle/ATV engines and automotive/truck blocks.

The new SV-20 honing system is the first competitively priced large-part machine for job-shop part production with a true linear, vertical, servo-stroking system to produce precision bore geometries on compressors, oilfield components, automotive/truck blocks and similar parts. Ideal for job shops and repair facilities, the SV-20 is equipped with a variable-speed 15-550 rpm, 4.1-kW (5.5 hp) spindle motor, powerful enough to drive two-stage, metal-bond, diamond abrasives for short cycle times with high accuracy and minimal labor. The SV-20’s linear stroking system keeps the honing tool concentric with the bore throughout the full stroke length to produce a consistent diameter from top to bottom of the bore. The machine's work envelope of 915 mm x 1015 mm (36" x 40"), front-loading design, and weight capacity up to 680 kg (1500 lb) combine for versatility in processing a wide range of large parts. The SV-20 can be used to hone bores with inside diameters from 19-200 mm (0.75-8.00").

The PLC-controlled SV-20 utilizes a color touch screen, with a toggle switch to jog for fast setup. The swiveling operator panel can be adjusted for viewing from a variety of positions. A hand wheel on the machine allows left/right positioning of the column on its 760-mm (30”) X-axis. The machine comes standard with a 208-litre (55-gallon) internal coolant system equipped with two standard canister filters.

The SV-20’s rotary servo tool feed system can be used with two-stage hone heads to complete roughing and finishing without stone changes for faster processing times. The machine is compatible with all of Sunnen's past and current tooling for CK/CV/SV-series machines, including diamond abrasive hone heads and brushes, GHSS single-stage hone heads with CBN or diamond abrasives and brushes, and GHTS hone heads for two-stage honing with CBN or diamond abrasives.

The SV-20 is available with a 400V/50Hz/3Ph or 460V/60Hz/3Ph electrical system. Options include a T-slot base, manual rollover cradle for engine blocks, and sump pump to allow connection to an external coolant supply.

Additional information on the SV-20 vertical honing machine is available from Sunnen Products Company, 7910 Manchester Rd., St. Louis, MO 63143. Tel: 1-800-325-3670; fax: 314-781-2268 or email

Sunnen Contact
Mr. Bob Davis
Global Communications Mgr.
Sunnen Products Company
7910 Manchester Rd.
St. Louis, MO  63143
Tel: 314-781-2100

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