Q(Quick Detachable) Bushed Sprockets

Applications of Q(Quick Detachable) Bushed Sprockets are ,Material Handling,Harvesters,Paper Industries,Agriculture.Q-D bushing is available in inch and metric size bore range ½" -7" and Reverse mounting possible with this Q(Quick Detachable) Bushed Sprockets.

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Detailed Description for Q(Quick Detachable) Bushed Sprockets

 

 

                 A sprocket or sprocket-wheel is a profiled wheel with teeth, cogs,or even sprockets that mesh with a chain, track or other perforated or indented material.The name 'sprocket' applies generally to any wheel upon which radial projections engage a chain passing over it. It is distinguished from a gear in that sprockets are never meshed together directly, and differs from a pulley in that sprockets have teeth and pulleys are smooth.Sprockets are used in bicycles, motorcycles, cars, tracked vehicles, and other machinery either to transmit rotary motion between two shafts where gears are unsuitable or to impart linear motion to a track, tape etc. 

 

Features & Benefits of Q(Quick Detachable) Bushed Sprockets:

* Q-D bushing is available in inch and metric size bore range ½" -7"

* Reverse mounting possible

 

Sprocket Dimensions:

 Bottom diameter/caliper diameter (B.D./C.D): This is the distance across the sprocket from the bottom of opposite tooth spaces. If the sprocket has an odd number of teeth there will be no exact opposite space, so caliper diameters are the measurement across from tooth spaces nearly opposite.

Number of teeth: This is the account of teeth located on the sprocket.

Outside diameter (O.D.): The measurement from the tip of the sprocket tooth across to the corresponding point directly opposite the sprocket.

Hub diameter (H.D.): In sprockets utilizing an integral hub, this is the distance through the hub's center bore.

Sprocket bore (S.B.): For hubbed sprockets, this is the width across the shaft hole of the hub.

Length through bore (L.T.B.): This is the distance within the bored hole on hubbed sprockets. This will be of larger value than the face width, and must be long enough to withstand torque from the shaft.

Inside diameter (I.D.): In sprockets that do not utilize a hub, this is the distance across the inner edges.

Pitch: This is the curved distance from the center of one sprocket tooth to the adjacent tooth center.

Pitch diameter (P.D.): A measurement across the sprocket from tooth center to corresponding tooth center. In instances where there is no direct opposite, the nearest tooth center dictates measurement.

Face width (F.W.): This is the value of the distance across the thinnest part of the sprocket. This is kept from its maximum to allow low-friction chain engagement, but also from its minimum to ensure proper working load.

 

                                                                                          

 

       “Quick Detachable” bushings are easy to install and remove. They are split through flange and taper to provide a thru clamp on the shaft that is the equivalent of a shrink fit. All sizes except JA and H have a set screw over the key to help maintain the bushings position on the shaft until the cap screws are securely tightened.

 

Installation

 

1. Be sure the tapered cone surfaces of the bushing and the inside of sprocket are clean.

2. Place bushing in sprocket, sheave, pulley or other QD parts. On M through S bushings, the mating part and bushing mUST be assembled so the two threaded holes in the mating part are

located as far as possible  from the saw-cut in the bushing.

3. Place cap screws and lock washers loosely in pull-up holes. Bushing remains fully expanded to assure sliding fit on shaft.

4. With key on shaft, slide sprocket to desired position on shaft. Be sure heads of cap screws are on outside.

5. Align sprocket. Tighten screws alternately and progressively-until they are pulled up tight. To increase leverage, use wrench or length of pipe (see wrench torque chart below). Do not allow sprocket to be drawn in contact with flange of bushing; there should be a gap of 1/8 to 1/4 inch.

 

Bushing Installation Torque:

When a wrench or length of pipe is used to increase leverage in tightening bushing screws, it is imperative to adhere to the wrench torque values given in the chart below.

This adherence is important because, in mounting the bushing, the tightening force of the screw is multiplied many times by the wedging action of the tapered surface. This action compresses the bushing for a snug fit on the shaft. The bushing screws should always be tightened alternately and progressively.

 

CAUTION

1. Be sure cone surfaces are free of paint, grease and dirt.

2. Tighten pull-up bolts alternately and evenly per bolt torque table.

3. Never close gap between sheave or sprocket and flange of QD bushing.

 

Removal

1. Loosen and remove cap screws.

2. Insert cap screws in tapped removal holes.

3. Tighten inserted screws until sprocket is loose on shaft.

4. Remove sprocket, pulley, sheave from shaft.

 


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