Taper Bushes

Category:

Description

The installation of taper lock bushings is fundamental to the correct installation of couplings, weld on and bolt on hubs and universal joints. The procedure is quite simple.

To install

  1. Check the bushing and shaft sizes are correct!
  2. Ensure the whole bushing, shaft and the hub to be fitted is clean of oil, dirt or lacquer.
  3. Install the bushing in the hub, matching the ½holes in the hub with the ½ holes in the bushing. (Note – each hole will be threaded on the hub side only).
  4. Oil the threads on the set screws or cap screws provided and fit loosely into the assembly.
  5. Slide the hub and bush assembly onto the shaft and locate in the desired position.
  6. Tighten the screws evenly and alternately until tight (see recommended torque figures below). Note that the bush will tighten onto the shaft first, then draw the hub slightly up the taper. This may affect the final axial position of the hub on the shaft. You may have to make an adjustment to the starting position to accommodate this.
  7. Using a soft hammer or hammer and soft wooden block, tap the taper bush at the larger end. Retighten the screws to the recommended torque figures. Repeat if required.
  8. Fill remaining holes with grease to prevent a build op of dirt in service.
  9. Shafts should be aligned using simple laser alignment tools to maximise coupling life.
  10. After the system has been run under load for a short time, the screws should be checked for tightness.

To remove

  1. Remove all screws. Oil the threads and insert into the holes that are threaded on the bush side. Note – you will not need all the screws to remove the bush.
  2. Tighten the screws alternately until the bushing is loosened.
  3. A gentle tap with a hammer may be required to loosen the parts.

Dimensions for taper bushes 1008 to 3030

Bush # A B Screw Bore range Bore range
mm mm qty Size Metric Imperial
1008 35.00 22.30 2 1/4″ x 1/2″ 9 – 25 mm 3/18″ – 1″
1108 38.00 22.30 2 1/4″ x 1/2″ 9 – 28 mm 3/8″ – 1.1/8″
1210 47.50 25.40 2 3/8″ x 5/8″ 11 – 32 mm 1/2″ – 1.1/4″
1215 47.50 38.10 2 3/8″ x 5/8″ 14 – 28 mm 1/2″ – 1.1/4″
1610 57.00 25.40 2 3/8″ x 5/8″ 14 – 42 mm 1/2″ – 1.5/8″
1615 57.00 38.10 2 3/8″ x 5/8″ 14 – 42 mm 1/2″ – 1.5/8″
2012 70.00 31.80 2 7/16″ x 7/8″ 14 – 50 mm 3/4″ – 2″
2517 85.50 44.50 2 1/2″ x 1″ 16 – 65 mm 3/4″ – 2.1/2″
3020 108.00 50.80 2 5/8″ x 1.1/4″ 25 – 75 mm 1.1/4″ – 3″
3030 108.00 76.20 2 5/8″ x 1.1/4″ 35 – 75 mm 1.1/4″ – 3″

Dimensions for taper bushes 3525 to 5050

Bush # A B Screw Bore range Bore range
mm mm qty Size Metric Imperial
3525 127.00 64.90 3 1/2″ x 1.1/2″ 35 – 100 mm 1.1/2″ – 4″
3535 127.00 88.90 3 1/2″ x 1.1/2″ 35 – 90 mm 1.1/2″ – 3.1/2″
4030 146.00 76.20 3 5/8″ x 1.1/4″ 40 – 100 mm 1.3/4″ – 4″
4040 146.00 101.60 3 5/8″ x 3.1/4″ 40 – 100 mm 1.3/4″ – 4″
4535 162.00 88.90 3 55 – 110 mm 2.1/4″ – 4.1/2″
4545 162.00 115.00 3 3/4″ x 2″ 55 – 110 mm 2.1/4″ – 4.1/2″
5040 177.60 101.60 3 7/8″ x2.1/4″ 70 – 125 mm 2.3/4″ – 5″
5050 177.60 127.00 3 7/8″ x 2.1/4″ 60 – 125 mm 2.3/4″ – 5″

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