Taper bush
A worldwide industrial standard for fixing pulleys, sprockets and couplings to a drive shaft.
Taper bush are a reliable and time saving solution for easy installation and dismantling from shafts with a key.
Conical bush in cast iron (GG25) with phosphated surface treatment, finished bore and keyway. Suitable for many different belt pulleys, chain sprockets, and couplings.
No machining needed
The full range of bushes with standard bore gives flexibility to your pulleys, sprockets or couplings, without the need for additional machining.
Fast installation
Fast and easy installation and dismantling of belt pulleys, chain sprockets and couplings.
Standard keyway
The keyways for metric bore follow the standard DIN 6885 / SS2305, and imperial bore follow the BS 46:Pt 1.
Wide range
Bushes available from size 1008 to 5050
Available bore sizes from 10 mm to 125 mm
Standards
DIN 6885/SS2305 (metric bore)
BS 46:Pt 1 (imperial bore)
Surface treatment
Phosphate coating for increased corrosion resistance
Technical data
| Bush No. | L (mm) | A (mm) | D (mm) | Screw dia x length (inch | BSW) | Hex key dim. | Tightening torque (Nm) |
|---|---|---|---|---|---|---|
| 1008 | 22.3 | 35.1 | 33.7 | 1/4 x 1/2 | 3 | 5.6 |
| 1108 | 22.3 | 38.2 | 36.9 | 1/4 x 1/2 | 3 | 5.6 |
| 1210 | 25.4 | 47.5 | 44.5 | 3/8 x 5/8 | 5 | 20 |
| 1215 | 38.1 | 47.5 | 44.5 | 3/8 x 5/8 | 5 | 20 |
| 1310 | 25.4 | 50.7 | 47.6 | 3/8 x 5/8 | 5 | 20 |
| 1610 | 25.4 | 57.1 | 53.9 | 3/8 x 5/8 | 5 | 20 |
| 1615 | 38.1 | 57.1 | 53.9 | 3/8 x 5/8 | 5 | 20 |
| 2012 | 31.8 | 69.8 | 66.7 | 7/16 x 7/8 | 6 | 31 |
| 2517 | 44.5 | 85.7 | 82.6 | 1/2 x 1 | 6 | 48 |
| 3020 | 50.8 | 107.9 | 101.6 | 5/8 x 1 1/4 | 8 | 90 |
| 3030 | 76.2 | 107.9 | 101.6 | 5/8 x 1 1/4 | 8 | 90 |
| 3525 | 63.5 | 126.8 | 122.6 | 1/2 x 1 1/2 | 10 | 113 |
| 3535 | 88.9 | 126.8 | 122.6 | 1/2 x 1 1/2 | 10 | 113 |
| 4030 | 76.2 | 145.8 | 140.7 | 5/8 x 1 3/4 | 12 | 170 |
| 4040 | 101.6 | 145.8 | 140.7 | 5/8 x 1 3/4 | 12 | 170 |
| 4535 | 88.9 | 161.7 | 155.7 | 3/4 x 2 | 14 | 192 |
| 4545 | 114.3 | 161.7 | 155.7 | 3/4 x 2 | 14 | 192 |
| 5040 | 101.6 | 177.6 | 170.7 | 7/8 x 2 1/4 | 14 | 271 |
| 5050 | 127.0 | 177.6 | 170.7 | 7/8 x 2 1/4 | 14 | 271 |
Bore in mm:
Standard keyway, the keyway follows standard DIN 6885 part 1.
Shallow keyway, the keyway follows standard DIN 6885 part 3.
Bore in inch:
Keyway according to BS46: Part 1
| Bush No. | Bore size in mm and inch | Keyway |
|---|---|---|
| 1008 | mm 10 - 22 | Standard |
| 1008 | mm 24 - 25 | Shallow |
| 1008 | in. 1/2 - 7/8 | Standard |
| 1008 | in. 1 5/6 - 1 | Shallow |
| 1108 | mm 10 - 25 | Standard |
| 1108 | mm 28 | Shallow |
| 1108 | in. 1/2 - 1 | Standard |
| 1108 | in. 1 1/16 - 1 1/8 | Shallow |
| 1210 | mm 10 - 32 | Standard |
| 1210 | in. 1/2 - 1 1/4 | Standard |
| 1215 | mm 11 - 32 | Standard |
| 1215 | in. 1/2 - 1 1/4 | Standard |
| 1310 | mm 14 - 35 | Standard |
| 1310 | in. 1/2 - 1 3/8 | Standard |
| 1610 | mm 10 - 42 | Standard |
| 1610 | in. 1/2 - 1 1/2 | Standard |
| 1610 | in. 1 9/16 - 1 5/8 | Shallow |
| 1615 | mm 14 - 40 | Standard |
| 1615 | mm 42 | Shallow |
| 1615 | in. 1/2 - 1 1/2 | Standard |
| 1615 | in. 1 9/16 - 1 5/8 | Shallow |
| 2012 | mm 10 - 50 | Standard |
| 2012 | in. 1/2 - 2 | Standard |
| 2517 | mm 16 - 65 | Standard |
| 2517 | in. 1/2 - 2 1/2 | Standard |
| 3020 | mm 24 - 75 | Standard |
| 3020 | in. 1 3/16 - 3 | Standard |
| 3030 | mm 24 - 75 | Standard |
| 3030 | in. 1 3/16 - 3 | Standard |
| 3525 | mm 30 - 95 | Standard |
| 3525 | mm 100 | Shallow |
| 3525 | in. 1 3/16 - 3 1/4 | Standard |
| 3525 | in. 3 5/16 - 3 1/2 | Shallow |
| 3535 | mm 30 - 90 | Standard |
| 3535 | in. 1 3/16 - 3 1/4 | Standard |
| 3535 | in. 3 5/16 - 3 1/2 | Shallow |
| 4030 | mm 40 - 110 | Standard |
| 4030 | mm 115 | Shallow |
| 4030 | in. 1 7/16 - 3 3/4 | Standard |
| 4030 | in. 3 7/8 - 4 | Shallow |
| 4040 | mm 40 - 110 | Standard |
| 4040 | in. 1 7/16 - 3 3/4 | Standard |
| 4040 | in. 3 7/8 - 4 | Shallow |
| 4535 | mm 42 - 125 | Standard |
| 4535 | in. 1 15/16 - 4 1/4 | Standard |
| 4535 | in. 4 3/8 - 4 1/2 | Shallow |
| 4545 | mm 42 - 115 | Standard |
| 4545 | in. 1 15/16 - 4 1/4 | Standard |
| 4545 | in. 4 3/8 - 4 1/2 | Shallow |
| 5040 | mm 48 - 125 | Standard |
| 5040 | in. 2 7/16 - 5 | Standard |
| 5050 | mm 48 - 125 | Standard |
| 5050 | in. 2 7/16 - 5 | Standard |
| Bush size | Bore Diameter (mm) | Values for transmittable torque without key (Nm) | Values for tightening (Nm) |
|---|---|---|---|
| 1008 | 12 | 29 | 5.6 |
| 1008 | 19 | 51 | 5.6 |
| 1008 | 24 | 66 | 5.6 |
| 1108 | 12 | 28 | 5.6 |
| 1108 | 19 | 49 | 5.6 |
| 1108 | 24 | 64 | 5.6 |
| 1108 | 28 | 79 | 5.6 |
| 1210/15 | 16 | 82 | 20 |
| 1210/15 | 19 | 105 | 20 |
| 1210/15 | 24 | 142 | 20 |
| 1210/15 | 32 | 210 | 20 |
| 1610/15 | 19 | 98 | 20 |
| 1610/15 | 24 | 135 | 20 |
| 1610/15 | 38 | 240 | 20 |
| 1610/15 | 42 | 265 | 20 |
| 2012 | 24 | 165 | 31 |
| 2012 | 38 | 310 | 31 |
| 2012 | 42 | 340 | 31 |
| 2012 | 48 | 400 | 31 |
| 2012 | 50 | 420 | 31 |
| 2517/25 | 24 | 220 | 48 |
| 2517/25 | 38 | 320 | 48 |
| 2517/25 | 42 | 430 | 48 |
| 2517/25 | 48 | 510 | 48 |
| 2517/25 | 55 | 600 | 48 |
| 2517/25 | 60 | 670 | 48 |
*Bore diameter is only available in short bush type
| Bush size | Bore Diameter (mm) | Values for transmittable torque without key (Nm) | Values for tightening (Nm) |
|---|---|---|---|
| 3020/30 | 38 | 520 | 90 |
| 3020/30 | 48 | 730 | 90 |
| 3020/30 | 55 | 890 | 90 |
| 3020/30 | 60 | 970 | 90 |
| 3020/30 | 75 | 1300 | 90 |
| 3525/35 | 42 | 1000 | 113 |
| 3525/35 | 60 | 1580 | 113 |
| 3525/35 | 75 | 2150 | 113 |
| 3525/35 | 90 | 2600 | 113 |
| 3525/35 | 100* | 3075 | 113 |
| 4030/40 | 48 | 1700 | 170 |
| 4030/40 | 60 | 2300 | 170 |
| 4030/40 | 75 | 3900 | 170 |
| 4030/40 | 100 | 4400 | 170 |
| 4030/40 | 115* | 5150 | 170 |
| 4535/45 | 55 | 2500 | 192 |
| 4535/45 | 75 | 3900 | 192 |
| 4535/45 | 100 | 5500 | 192 |
| 4535/45 | 110 | 6300 | 192 |
| 4535/45 | 125* | 6625 | 192 |
| 5040/50 | 75 | 3950 | 271 |
| 5040/50 | 100 | 5650 | 271 |
| 5040/50 | 125 | 7370 | 271 |
| 5040/50 | 130* | 7725 | 271 |
