SPROCKETS 101
The following defines terminology and provides guidance to help select the best sprocket for a given application. In the event that further assistance is required, please call Tsubaki customer service at (800) 323-7790.
SPROCKETS Tsubaki produces a broad range of sprockets to satisfy all your application requirements. Stock product offerings are readily available and can be supplied in a multitude of pitch ranges and configurations. Extensive design, engineering and manufacturing capabilities allow Tsubaki to produce a wide variety of made- to-order sprocket products for a miltitude of applications. From one-off customer designs to high volume OEM and Smart Tooth ® sprocket requirements, Tsubaki has you covered.
Basics of Sprockets
1. Caliper Diameter: Caliper Diameter refers to the dimension measured from sprocket tooth valley to sprocket tooth valley on the opposite side (180°) of the sprocket. This dimension is used to measure the diameter of the sprocket plate (not including sprocket teeth). On sprockets that have an odd number of teeth, the measurement would be taken from the valley of one tooth to the valley as close to 180° on the opposite side of the sprocket.
Measuring caliper diameter
2. Sprocket Outside Diameter: Sprocket outside diameter is the measurement from sprocket tooth peak to sprocket tooth peak on the opposite (180°) side of the sprocket. For sprockets with an odd number of teeth, the measurement would be taken from the peak of one sprocket tooth to the peak of a tooth as close to 180° as possible.
CALIPER DIAMETER
Measuring sprocket outside diameter
3. Maximum Bore Diameter: Refers to the maximum bore size diameter a sprocket can be machined to without compromising structural integrity. This term is associated with both “B” and “C” style sprockets. 4. Length Thru Bore: “LTB” Refers to the inside hub diameter and the length to which it was machined. This machined length must be long enough to accommodate the proper size keyway to withstand shear and torque stress induced by the rotating shaft.
TOOTH (NOMINAL)
TOOTH (NOMINAL)
LTB
LTB
STYLES TYPEB
STYLEE TYPEB
Maximum bore diameter and thru bore
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