Allenair - Cyl-Check

CYL-CHECK FEATURES

. 3000 pounds capacity maximum thrust load.

. Feed Control available for Forward, Rearward or Both Directions.

. Feed Rate infinitely variable.

. Optional Stop and Skip Check features.

. Optional Threaded Rod Extensions available for rapid traverse.

. Complete mounting versatility.

. Precision honed high strength brass body provides longer seal life.

. Wear Strip on piston and extra long bearing in front head for prolonged life.

. Viton Seals to insure long life when heat build-up occurs.

STANDARD STROKES AVAILABLE ARE 2-1/2", 5", 6", 10", 15" & 20". SPECIAL STROKES AVAILABLE.

The Allenair Cyl-Check ® is a self-contained oil filled unit which can be used in any tool or work feeding application, eliminating chatter caused by variations in power thrust and irregular loads, providing smooth, uniform and precise feed control. The unit can be coupled with a Pneumatic Cylinder or other linear motion and provides the flexibility required in many applications, without the costly expense of a completely hydraulic system. The Allenair Cyl-Check is a high quality unit carefully designed, produced, assembled, and tested to provide long trouble-free service.

CYL-CHECK DESCRIPTIONS

PARALLEL MOUNTING: These are individual Cyl-Checks ® which can be mounted parallel with most 1-1/2" , 2", 2-1/2", 3" or 4" bore Allenair Cylinders. This is achieved by means of a common front Nose Mount, a Rod Tie Bar and Mounts to secure the back end of each unit.

It must be noted that in parallel mounting, because of the opposing forces, a side-load condition is created on the rods. It is imperative that the rod of the air cylinder be securely fastened and not allowed to deviate from a straight linear motion. The Cyl-Check ® can also be mounted independently to control other linear motions. Care should be taken to insure alignment in such cases, so that the rod of the Cyl-Check ® is not subject to side thrust.

TANDEM MOUNTING: The Tandem Cyl-Check ® Assembly is an in-line assembly of a Cyl-Check ® and a 2", 2-1/2", 3" or 4" bore Allenair Type "A" or "E" Double Acting Air Cylinder. The major advantage of these units is that the side-load condition between the rods is completely eliminated due to the direct in-line coupling of the Cyl-Check ® and Cylinder Rods.

TYPES


BOTH DIRECTIONS FEED:
TYPES CHB PARALLEL MOUNTING
CHTB TANDEM MOUNTING
These units provide fully independent control in both forward and rearward directions.
(Note: CHB 2-1/2 CANNOT be used with Mounting Kits CHMK-1 or CHMK-2.)


FORWARD DIRECTION FEED:
TYPES CHF PARALLEL MOUNTING
CHTF TANDEM MOUNTING
These units provide control in forward direction only, with unrestricted movement when retracting.

REARWARD DIRECTION FEED:
TYPES CHR PARALLEL MOUNTING
CHTR TANDEM MOUNTING
These units provide control in rearward direction only, with unrestricted movement when extending.
All of the above types can be supplied with the side tubing and control valve mounted on either the left hand side (specify LH) or right hand side (specify RH) of the unit, looking from rod end, with the reservoir on top.

OPTIONS
THREADED ROD EXTENSION (RAPID TRAVERSE): This consists of an increased threaded rod length with stop nuts, which allows the cylinder rod and tie bar to travel unrestricted until the tie bar comes in contact with the stop nuts, where checking action will begin. The correct length of extra threaded rod extension must be identical or longer than the length of unrestricted travel required. Note, however, that the stroke of the Cyl-Check ® need be no longer than the maximum checking length required, but must include the correct threaded rod extension when ordered. Available on individual and parallel mounted types only. Standard lengths of extra threaded rod extensions are 5", 10", 15", 20" or 30". Select nearest standard extra rod extension and Cyl-Check ® stroke.

SKIP CHECK (RAPID TRAVERSE): The Skip Check allows by-pass of the control valve permitting rapid traverse and
intermittent checking action in the direction of control.

OPERATION: The Skip Check unit is basically a 2-way Piloted Valve. With either the "Air Operated" or "Solenoid Operated" model, rapid traverse automatically occurs until pilot pressure is applied. On the "Air Operated" model, air is supplied through the use of a separate 3-way valve. On the "Solenoid Operated" model, a 3-way normally open valve is an integral part of the Skip Check unit, and must have a constant pilot pressure supplied to it. With pilot pressure supplied to the top of the solenoid housing, rapid traverse will occur when solenoid is energized. If pilot pressure is supplied to the solenoid adaptor base rapid traverse will occur when solenoid is de-energized. NOTE: Pilot pressure must equal the operating pressure of the air cylinder used. If any other linear force is used, pilot pressure (P.S.I.) must be at least equal to THRUST (LBS.)/20. Please see Page 54 for pilot pressure port locations and dimensions.

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CAD Files Available