G 250 / G 450
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G 250 / G 450 generating and profile gear grinding machine

G 250 / G 450 generating and profile grinding machine The Samputensili G 250 / G 450 is a machine platform, available in two sizes, based on established concepts of the best-selling Samputensili S 250/400 G machine, which have been further enhanced and improved. The result is an innovative, compact and extremely flexible gear grinding machine. The Samputensili G 250 / G 450 has been especially developed for very low cycle times and for top-quality and efficient mass production of gears with outside diameters up to 250 mm (450 mm for the bigger size) and shafts with lengths up to 550 mm. 2 G...

Gear grinding: maximum efciency with safe investments The grinding spindle with its specifically large tool capacity allows the use of long grinding worms to raise the tool life of single or combination worms of roughing and finishing tools employing electroplated CBN or ceramic bound grinding worms and wheels. So you can always rely on the most efficient technology or the most beneficial combination to complete your grinding task. Due to the extremely high rotational and linear accelerations with their appropriate absolute speeds the machine guarantees excellent cycle times and is...

G 250 Dual work spindles concept for maximum productivity and flexibility The G 250 machine features a dual work spindle concept, which eliminates non-productive auxiliary times almost completely, thus raising the efficiency of your production. By means of the dual work spindles, the loading/unloading process of a workpiece is carried out in masked time, while simultaneously the manufacturing process proceeds on another workpiece. Unlike other applications, the gear meshing is conveniently carried out directly in the grinding position for better accuracy purposes and very high change-over...

Radial movement tool column Tangential movement tool head Vertical movement tool head slide Swivel tool head Rotation tool spindle Rotation movement dressing spindle Swivel coolant nozzle Rotation workpiece spindle 1 Rotation workpiece spindle 2 Rotation worktable Rotation checking unit Vertical movement tailstock positioning Vertical movement tailstock 1 Vertical movement tailstock 2 G 250 / G 450 5

G 450 Work spindle concept The G 450 is synonymous with maximum flexibility and high ergonomics, and has been especially engineered for small-medium production lots. Keeping the machine at operating speed gives advantages in terms of thermal and mechanical stability of the machine parts. As a result, the G 450 works using a single worktable, which – as in the case of the G 250 – is mounted on the rotating table. This feature simplifies the loading/unloading as well as the tooling operations. On the same rotating table, but diametrically opposite the work spindle, an innovative and...

Radial movement tool column Tangential movement tool head Vertical movement tool head slide Swivel tool head Rotation tool spindle Rotation movement dressing spindle Swivel coolant nozzle Rotation workpiece spindle Rotation worktable Rotation checking unit Vertical movement tailstock positioning G 250 / G 450 7

Dressing for flexible efficiency via standard dressing rolls The dressing unit consists of a diamond dressing roll mounted on a dedicated spindle, which is located on the rotating table structure. An optional diamond OD dressing tool can be mounted on the dressing unit structure, in order to have the necessary flexibility to dress the OD of the grinding wheel. If the tooth root diameter must be ground as well, a tip radius dressing roll is applied to create the required tip radius on the grinding tool. When required, the dressing unit is automatically brought into the working position by...

Integrated inspection unit A hydraulically actuated swivelling arm brings the inspection probe into position and retracts it from the working area during the grinding process; profile, lead and pitch inspection is performed. Results may be directly printed or stored on a memory device. At a glance + Completely integrated process with centralised control + Direct inspection sheet print-out + Checking unit retracted from workarea during grinding Highlights In the G 250 / G 450 the minimum axis distance between worktable and grinding wheel is 40 mm, and its grinding spindle can achieve 12.000...

Latest Siemens drive technology and Samputensili Menu guidance ensure maximum process security. Samputensili correction software allows the immediate correction of prole slope errors by redressing the grinding wheel. + Fast data validation and error rator interface with simulation Modular software packages inclu- ding profile correction modules + Easy and intuitive operation Direct networking, USB interface + Faster data transfer to machine True Windows© environment

Technical data Helix angle degree Grinding wheel width, max. mm Machine overall dimensions L x W x H mm Siemens 840 D Solution Line Technical data subject to change.

Samputensili Beijing Room 1801/1802, Jing Tai Tower, No. C24 Jian Guo Men Wai Avenue 100022 Beijing, P.R. China Tel.:+86 (010) 6515 6349 - 6515 6350 Fax:+86 (010) 6515 7150 beijing@samputensili.cn Star SU LLC 5200 Prairie Stone Parkway, Suite 100 Hoffman Estates, IL60192 USA Tel.:+1 (847) 649 1450 Fax:+1 (847) 649 0112 sales@star-su.com SU Korea Co. Ltd. 4 MA- 319 Sihwa Industrial Complex 703-12, Sung-Gok Dong An-San City Kyungki-Do, Rep. of Korea Tel.:+82 (031) 497 18 11 Fax:+82 (031) 497 18 15 samputensili@naver.com Samputensili do Brasil Ltda. Rod. Dom Gabriel Paulino Bueno Couto Km 66,3...