Sunday 01 August 2010 | 7:54 am GMT
 

Svecom PE: Shafts and chucks; expanding, pneumatic and mechanical

Expanding chucks - image for illustration purposes only

Expanding chucks

Chucks

Model 714 MZL pneumatic-mechanical leaf chuck

The 714 MZL provides benefits to tissue mills and converters when unwinding large tissue rolls. These include greater transmission wrench, increased safety, faster handling and a reduction in roll and core waste. An added advantage is easy insertion into, and correction of, damaged or badly worn cores.

Half the weight of standard mechanical expanding chucks, the 714 MZL is suitable for cores ranging from 150mm to 500mm in internal diameter.  Core plugs can carry over 3000 kg in reel weight; unwinding up to 3000mm diameter rolls; at an unwinding speed 700 M/minute.

Model 714/MZ pneumatic-mechanical expanding chuck

Primarily recommended for unwinding where perfect centering is needed, it can also be used for winding and re-winding. Dependent on core size, a 20 mm expansion range is available. This chuck carries more weight at faster speed and transmits more torque than any other chuck available. Light-weight adaptors for additional core sizes can be supplied. Can be expanded using air valve or rotary union.


Model 711/MA mechanical self-expanding chuck

The 711/MA is recommended primarily for unwinding of both steel and cardboard cores. Concentric running and expansion is by means of a cam.


Model 713 MA Mechanical self-expanding chuck with sector


Model 714/MZ-A pneumatic-mechanical self-expanding chuck

The body and expanders are available in steel only. Based on the 714/MZ chuck, the MZA has a self-expanding system to give even great torque transmission and grip.

Model 714/AD mechanical expanding with axial thrust

The body and expanders (leafs or lugs) of the 714/AD are available in steel or rubber covered.

Model 718/PH

Designed primarily for lifting and vertical handling of reels, the 718/PH provides safe core gripping during lifting and transporting operations. The chuck body and the expanders (lugs or leafs, depending on the application) are available in steel only.

Model 715/PG air chuck

Recommended for unwinding and rewinding with cores. The body of the chuck can be either light alloy or steel, whereas the expanding section is made of a high resistance rubber tyre. When deflated the tyre is concave in design so it retracts below the diameter of the end plates. This results in quicker reel changes as there is no rubber in contact with the core as with competitor chucks.

Model 740/PL air chuck

The chuck body is available in steel or aluminium, and the expanders in steel, rubber, plastic or in combination, depending on the application. This chuck is manufactured to suit individual applications so overall diameter, bore size and length are all made to order. When the need is for a lightweight, concentric chuck to fit on an existing air shaft or passing bar the 740/PL is the answer.

Model 716/PK air chuck

Designed for unwinding and rewinding with cores, the body of the chuck is normally made of steel and the expanders (lugs) come in either hardened steel, aluminum or
rubber-covered depending upon core material and torque requirements.

Safety chucks 

Foot or flange mount normally sold in pairs, one chuck shafted for the brake of the drive mount and the other plain ended. Finger guards are fitted as standard.

Model 900K

Competitive safety chuck with finger guards and foot or flange mount for shafts with square ends.

Model 910

Diamond shaped jaw and designed for faster speeds.

Model 925

A high-speed chuck manufactured with round or square jaws to eliminate end-float and shaft chatter so journal and jaw wear is at a minimum.

Model 950

As the 925 series but with facility of side lay adjustment to assist with reels that have slack or baggy edges.