Split Taper Bushing

Split taper bushings are used in a wide variety of applications. They are often found in transmission components such as sheaves. The split barrel design allows them to work with a variety of shaft sizes. These bushings have a flange on their outer diameter.

These bushings are easy to install and remove. This is because they are made of malleable iron, which makes them tough. It also helps that they are available in a variety of sizes. Depending on the diameter of the shaft, the size of the split taper bushings ranges from one-half inch to four and a half inches.

When buying a split taper bushing, make sure it is free of anti-seize lubricants. Using these lubricants on the bolt threads can damage the sheaves. In addition, it is important that the flange has a gap between it and the sprocket.

Split Taper Bushing Dimensions

Split Taper Bushings are made of malleable iron which makes for a very stiff and durable bushing. These are available in both decimal and metric sizes. The best part is that they can be adapted to fit many different types of shafts. There are even some that have a cleverly concealed flange to improve the holding power of their cap screws. This allows for a simple and foolproof installation.
The best way to make a selection is to determine which type of bushing you need first and to compare them on a case-by-case basis. The most important aspect of choosing a bushing is the proper spacing between your cap screws and the sprockets. Make sure to check the alignment of your sprockets before tightening your screws. For added safety, lube your sprockets before inserting them into the drive shaft. Also, be sure to take the time to clean them and their surrounding surroundings.

G&h Split Taper Bushing
S&U Split Taper Bushing
P B Q R Split Taper Bushing
W&Y Split Taper Bushing
Split Taper Bushing Types DIMENSIONS BORE RANGE CAP SCREWS AV.
WT. LBS.
WRENCH TORQUE
In-Lbs.
L U T D H V W X Y R S TYPE 1 TYPE 2 No. SIZE
LARGE
END
SMALL
END
G 1 1/4 3/4 1.172 1.134 2 1 9/16 10/16 3/16 1/8 3/16 3/8 – 15/16 1 2 1/4-20 x 5/8 0.5 95
H 1 1/4 1/4 1 1.625 1.571 2 1/2 2 14/16 3/16 1/8 3/16 3/8 – 1 1/8 1 7/16 – 1 1/2 2 1/4-20 x 5/8 0.8 95
P1 1 15/16 3/8 1 9/16 1.938 1.856 3 2 7/16 3/8 1 5/16 5/16 1/4 13/64 1/2 – 1 7/16 1 1/2 – 1 3/4 3 5/16-18 x 1 1.3 192
P2 2 15/16 3/8 2 9/16 1.938 1.793 3 2 7/16 3/8 2 5/16 5/16 1/4 13/64 3/4 – 1 7/16 1 1/2 – 1 3/4 3 5/16-18 x 1 1.5 192
P3 4 7/16 3/8 4 1/16 1.938 1.699 3 2 7/16 3/8 3 13/16 5/16 1/4 13/64 1 1/8 – 1 3/8 1.625 3 5/16-18 x 1 1.5 192
B 1 15/16 1/2 1 7/16 2.625 2.557 3 11/16 3 2/16 1/2 1  1/16 3/8 5/16 13/64 1/2 – 1 15/16 2 – 2 7/16 3 5/16-18 x 1 1/4 1.8 192
Q1 2 1/2 1/2 2 2.875 2.769 4 1/8 3 3/8 1/2 1 11/16 3/8 1/4 15/64 3/4 – 2 1/16 2 1/8 – 2 11/16 3 3/8-16 x 1 1/4 3.5 348
Q2 3 1/2 1/2 3 2.875 2.707 4 1/8 3 3/8 1/2 2 11/16 3/8 1/4 15/64 1 – 2 1/16 2 1/8 – 2 5/8 3 3/8-16 x 1 1/4 4.5 348
 Q3 5 1/2 4 8/16 2.875 2.613 4 1/8 3 3/8 1/2 4 3/16 3/8 1/4 15/64 1 3/8 – 2 1/16 2 1/8 – 2 1/2 3 3/8-16 x 1 1/4 5.5 348
R1 2 7/8 5/8 2 1/4 4.000 3.877 5 3/8 4 5/8 3/4 1 15/16 5/16 1/4 15/64 1 1/8 – 2 13/16 2 7/8 – 3 3/4 3 3/8-16 x 1 1/4 7.5 348
R2 4 7/8 5/8 4 1/4 4.000 3.752 5 3/8 4 5/8 3/4 3 15/16 5/16 1/4 15/64 1 – 2 1/16 2 1/8 – 2 5/8 3 3/8-16 x 1 1/4 11 348
S1 4 3/8 3/4 3 5/8 4.623 4.420 6 3/8 5 3/8 3/4 3 1/4 7/16 3/8 5/16 1 11/16 – 3 3/16 3 1/4 – 4 1/4 3 1/2-13 x 2 1/4 13.5 840
S2 6 3/4 3/4 6 4.623 4.272 6 3/8 5 3/8 3/4 5 5/8 7/16 3/8 5/16 1 7/8 – 3 3/16 3 1/4 – 4 3/16 3 1/2-13 x 2 1/4 19 840
U0 4 15/16 3/4 4 3/16 5.997 5.768 8 3/8 7 1 1/4 3 11/16 9/16 1/2 3/8 2 3/8 – 4 1/4 4 3/8 – 5 1/2 3 5/8-11 x 2 3/4 27 1680
U1 7 1/8 1  3/16 5.9375 5.997 5.658 8 3/8 7 1 1/4 5 7/16 9/16 1/2 3/8 2 3/8 – 4 1/4 4 3/8 – 5 1/2 3 5/8-11 x 2 3/4 40 1680
U2 10 1/8 1  3/16 8 15/16 5.997 5.471 8 3/8 7 1 1/4 8  7/16 9/16 1/2 3/8 2 7/16 – 4 1/4 4 3/8 – 5 3 5/8-11 x 2 3/4 50 1680
W1 8 1/4 1  7/16 6 13/16 8.496 8.104 12 1/2 10 1 1/4 6 1/4 9/16 1/2 1/2 3 3/8 – 6 3/16 6 1/4 – 7 7/16 4 3/4-10 x 3 104 3000
W2 11 1/4 1  7/16 9 13/16 8.496 7.916 12 1/2 10 1 1/4 9 1/4 9/16 1/2 1/2 3 3/8 – 6 3/16 6 1/4 – 7 7/16 4 3/4-10 x 3 133 3000
Y0 11 1/8 2 9 1/8 12.000 11.469 16 1/2 14 1/2 2 8 1/2 11/16 5/8 5/8 6 – 7 15/16 8-10 4 1-8 x 5 270 7200
Split Taper Bushing Sizes

Split Taper Bushing Installation

Installing a split taper bushing involves several steps. Here’s a general guide to help you with the installation process:

  • Gather the necessary tools and equipment: You’ll need a torque wrench, hammer, screwdriver, and possibly a puller or bushing installation tool (if required by the specific bushing).
  • Prepare the shaft and hub: Ensure that the shaft and hub are clean and free from any debris or burrs. This will help with the proper installation and alignment of the bushing.
  • Inspect the bushing: Before installation, check the split taper bushing for any damage or defects. Make sure it is the correct size and type for your application.
  • Position the bushing: Place the split taper bushing inside the hub, ensuring that the split line of the bushing aligns with the split line of the hub. The tapered surface of the bushing should face the shaft.
  • Tighten the bushing: Begin tightening the bushing using a torque wrench and a socket wrench. Alternate tightening the bolts in a diagonal pattern to ensure even pressure distribution. Follow the manufacturer’s specifications for the recommended torque value.
  • Check alignment: After tightening the bushing, use a dial indicator or similar tool to check the alignment between the shaft and hub. This step is important to ensure proper alignment and minimize any potential vibration or misalignment issues.
  • Secure the bushing: If provided by the manufacturer, install set screws or pins to secure the bushing in place. These additional fasteners can help prevent the bushing from rotating or coming loose during operation.
  • Test the installation: Rotate the shaft manually or using a power source to ensure smooth operation and proper alignment. Pay attention to any unusual vibrations or noises, as they may indicate an issue with the installation.
Split Taper Bushing

Split Taper VS QD Bushing

A QD bushing is another type of system that looks like a split taper bushing. However, the QD bushing is not split. Instead, it has a split that extends through the flange.

Unlike a split taper bushing, the QD bushing is not compatible with shafts of different sizes. This makes the QD bushing a good choice for space-restricted applications.

Another advantage of the QD bushing is its ease of installation. Unlike a traditional flange-type bushing, the QD is simple to apply. Rather than having to bore out a shaft for the flange-type version, you simply need to install the cap screws in the pull-up holes.

Split taper bushings are used to mount pulleys or sheaves on a shaft. These bushings come in several different sizes, which are dependent on the diameter of the shaft. They are similar to quick disconnect (QD) bushings, but they are keyed to the shaft instead of being free.

China Split Taper Bushing
China QD Bushing