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Product Info 　 Sprockets and Pin Gear Drive

A sprocket is a type of gear, also known as a chainwheel.

It is a mechanical element that can transmit the rotation of the shaft to the chain and the tension of the chain to the shaft.

Depending on whether or not a hub is included, there are types such as Type A (flat type), Type B (single hub type), and Type C (double hub type).

It is available in high strength and corrosion resistant specifications, and can be used in a variety of situations.

*Sprockets for Plastic modular chain, Top chain, and Plastic block chain can be viewed on the product page for each chain.

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table of contents

Features
Structure
Shaft fastening method
Material and surface treatment
Product List

Sprocket and Pin gear drive related information

Selection
Materials
Operation
- Troubleshooting
- Self-maintenance information

Features

When used for Drive chain transmission, a large reduction ratio can be achieved by combining different numbers of teeth (generally up to 1:7).
・You can choose from a wide lineup of products, including not only pilot bore products but also products with machined shaft holes and additionally machined shaft holes (steel, stainless steel, resin, surface treatment, etc.).
-We offer a lineup of materials and specifications to suit your application.
・Sprockets for pin gears with special tooth profiles can be used in combination with attachment chains, pin racks, and pin wheels for linear and rotary drive applications rather than power transmission purposes.
You can use it.

Structure

RS sprockets come in four types of structures specified by JIS.

Model code	A-type (flat plate type)	B type (Single hub type)	C type (double hub type)	SD type (single dual)
Structure
		RS-HT chain (SUPER-H, HT, etc.) multiple strand ^{Note 1}		A shape that allows two single strand chains to be hung at the same time
		HB type	HC type
Use depending on the structure	It is used when attaching to a rotating body such as the center member of a torque limiter.	It is the most versatile.	Used when the key surface pressure is insufficient with the large driven sprocket or B type.	It is used by hanging two single strand chains at the same time.

Note
1. The total tooth width (transverse pitch) of RS-HT chain multiple strand (HB type, HC type) is different from the standard.

Shaft fastening method

There are three types of shaft hole specifications for mounting a sprocket to a mating shaft:

series	Exterior	Specification
Standard pilot bore		Additional machining of the shaft hole is required for use.
Fit Bore		The details of shaft hole processing and bearing hole processing are coded, allowing for accurate ordering by model number. Our lineup of shaft hole processing includes finished shaft hole products and additionally processed shaft hole products. The shaft hole, keyway, and tapped holes are already processed, so it can be used immediately after delivery. The bearing bore is a precisely finished housing hole, so you can insert your own bearing and use it immediately.
Lock Sprocket		By tightening the bolt with a torque wrench, the frictional force of the tapered sleeve firmly fastens the sprocket to the shaft. It can be installed without the need for troublesome key processing on the shaft side, and phase alignment is easy. In addition, installation and removal can be easily done by simply attaching and removing the bolts.

Material and surface treatment

We offer a lineup of specifications and materials to suit your application, including steel, surface-treated, stainless steel, and resin.

Standard steel	Carbon steel for machine structures
Surface Treatment	Carbon steel for machine structures + black oxide finish	You can choose from shaft hole processed products (sprocket Fit Bore).
	Carbon steel for mechanical structures + electroless nickel-phosphorus plating	You can choose from shaft hole processed products (sprocket Fit Bore).
	Carbon steel for mechanical structures + electrogalvanized (trivalent chromate treatment)	You can choose from shaft hole processed products (sprocket Fit Bore).
	Carbon steel for machine structures + other special surface treatments
Environmental resistance	Stainless steel, titanium, and other special materials
resin	Engineering plastic nylon resin MC901 special (blue) *Only for RS35, 40, 50, 60

Sprocket and Pin gear drive product list

Pin gear drive

Here we introduce Pin gear drive.

Pin gear drive unit is a set of pin gear, roller rack and wheel that can move in a straight line, up and down, rotate and swing.
We offer sprockets specifically for chain-type pin gears.