This item may be available in a different size, colour, scent, version or platform. Click below to be directed to product options:
For use with series 35 chain, 3/8" pitch for driver or driven sprocket needs
Type BS sprocket with two setscrews and a keyway offers a stable and secure attachment to the shaft
Shaft diameter size from 3/8" to 1-1/4" for a variety of applications
Varying numbers of teeth, hub sizes, and stock bore sizes offer application flexibility
High carbon steel for strength and durability
The Martin type BS sprocket, also known as a bored-to-size sprocket, includes two setscrews and a keyway, and is suitable for use with the series 35 chain with a 3/8” pitch. This sprocket has been adapted for installation on the shaft without additional components. Made from high carbon steel, it has high strength and durability.
This sprocket has a hub extension on one side to provide stability and allow for the use of a full-depth keyway and two standard set-screws to attach the sprocket onto a shaft.
The options for this class of sprocket are: number of teeth from 9 to 112; outside diameter from 1.260” to 13.590”; stock bore size from 3/8” to 1-1/4”; length through bore from 3/4” to 1.00”; and approximate weight from 0.10 lbs to 6.50 lbs. The chain row width is 0.168” nominal. The keyway is on the centerline of the tooth. The following exceptions are present: the 9-tooth option with 3/8” shaft has no keyway and uses two (2) 1/4” setscrews; the 10-tooth option with 3/8” and 1/2” shaft has no keyway and uses two (2) 1/4” setscrews; the 10-tooth option with 5/8” shaft has the keyway is aligned with the setscrews at 90 degrees; the 11-tooth option with 3/8” and 1/2” shaft has no keyway and uses two (2) 1/4” setscrews; the 11-tooth option with 5/8” and 3/4” shaft has the keyway is aligned with the setscrews at 90 degrees; the 12-tooth option with 1/2” shaft has no keyway and uses two (2) 1/4” setscrews; the 12-tooth option with 3/4” shaft has the keyway aligned with the setscrews at 90 degrees; the 13- to 25-tooth options in the 1/2” shaft option have no keyway and use two (2) 1/4” setscrews at 90 degrees. With this series of sprockets, the hub diameters will vary to suit different bore sizes. All Martin sprockets meet or exceed ANSI standards.
A sprocket is a wheel with teeth around the perimeter that meshes with a chain, track, or other perforated or indented material. Unlike gears that mesh with another gear, sprockets mesh with a chain, which then interacts with another sprocket. Gears can be used to transmit power around a corner, based on how they fit together. Sprockets with chains only work in straight lines. Some common benefits of chain-drive systems include minimal slippage, a fixed ratio between rotating shafts, and versatility with many different chain attachments and sprocket material selections. An example of a power transmission system is a standard bicycle, which has a sprocket and a chain to deliver power from the rider’s legs to the wheels making the bike move.
Martin Sprocket & Gear manufactures power transmission and conveying products. The company was founded in 1951 and is headquartered in Arlington, TX. Martin provides tools that meet American National Standards Institute (ANSI), National Aerospace Standard (NAS), and Deutsches Institut für Normung (DIN) standards.
Most Helpful Customer Reviews
I have specified and used Martin products from this size sprocket, to huge gears with a 2DP tooth, and 48" diameter, and their quality is always superb. They can also fabricate any gear or sprocket that you send the drawings for.
It arrived on time, was well packaged. I looks well made and, so far, has performed flawlessly.
After years of ordering this type and brand of sprocket I had a need for one. It is perfect for the job it does and no time was lost waiting for delivery.
The authorised South African distributor of this product is under no obligation to honour the manufacture's guarantees/warranties or to provide after-sales service.
Please note that this item is imported from the USA, and is designed to be used in the USA. In addition, if the unit is powered it will come with a US plug and an adapter/transformer may be required. Please click here for more information on power requirements, or check with us if you are unsure or need any assistance!
Please also note that certain items cannot be imported, these include Alcohol, Animals, Flammable Materials, Currency, Food, Furs, Chemicals, Explosives, Medications, Plants, Seeds, Supplements, Pressurized Cans, Tactical Equipment, Vitamins, Weaponry and Weaponry Accessories. In these cases, the item and information is displayed for reference purposes only. If you are not sure if we are permitted to bring an item, please send us an e-mail with a link to the item to confirm.
Please also ensure that you are ordering the correct item for your particular application as returns to the USA are costly. Product reviews are also provided for most of our items, which can give you a good idea for possible things to look out for and the quality of the item. By clicking Add to Cart, you are confirming that the item is correct and you accept the conditions listed here.