I'm trying to figure out what size woodruff key to use for the sprockets on the tram. The 'key size vs shaft diameter' table in Machinery's Handbook shows for shafts 7/16'-9/16', use a key of 1/8' width (for a square or rectangular key, not a woodruff), and that corresponds to the width in the sprockets I bought with 1/2' bores. There is no information I can find as to what key length (effectively the diameter of the circle the key would fit into) should be used on what shaft size. Too small and the key might be too weak, too large and the axle would be weakened too much.
Minimum order 3 pieces per size. To determine the Tool Number, add the decimal size to the tool number in the chart below. Example: 28100SPT-114 is for a 3/16' Diameter x.114' Cutter Width. Longer neck tools are quoted on request. Delivery is 7-10 days for uncoated tools. Size(s) 3 x 5 x 12mm, 4 x 5 x 12mm, 3 x 6.5 x 15.5mm, 4 x 6.5 x 15mm, 4 x 7.5 x 18mm, 5 x 7.5 x 18mm, 5 x 9 x 21mm, 6 x 9 x 21mm Note: Specifications are approximate and subject to change. American Standard #: 202.5 Old Standard #: 206 Style: Style 100 Neck Diameter.
There are several 1/8' woodruff keys, key numbers 403 through 406, with the last digit representing the number of 1/8ths in length, so 3/8' to 3/4' by 1/8' increments.
What length key should I use? The sprocket hub is 3/4' wide, so it can accomodate any of the available lengths, but I want to be sure that I don't weaken the shaft by cutting too much out.
Steve
Machine Keystock Express’ goal is to offer lower prices on machine key stock and ready-to-use machine key sizes than other sellers.
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Machine Keystock Express manufactures machine keys of the highest quality that meet ISO 9001 certifications. Our machine keys are manufactured with SS304 stainless steel and SC45 carbon steel and alloy steel in many sizes.
If you normally buy machine key stock to make your own machine keys, you may find it cheaper to buy our ready-made keys in the sizes you need, which can be less costly than your labor needed to work with key stock.
Planet 7 casino no deposit bonus 2020. We manufacture several kinds of machine keys in many sizes:
- Woodruff keys are half-circle shapes, with radius or flat bottoms. DIN-6888.
- Parallel keys are rectangular shapes with ends that are square (DIN-6885-B), round (DIN-6885-A), or both (DIN-6885-AB). We have in stock ready-to-use keys in inch and metric sizes
- Key stock is very long so you can cut it into whatever size machine keys you need. We have ready-to-ship key stock in inch and metric sizes.
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What Are Machine Keys,
Also Known as Shaft Keys?
Machine keys are used in power transmission to transmit torque between a shaft and a shaft mounted component such as a gear, pulley, or coupling. Both the shaft and the component must be machined with a keyway of the appropriate size and style for the key to be used.
Machine keys are sometimes called shaft keys, or sunk keys, and are available in a variety of types and include Parallel Keys, Flat Keys, Woodruff Keys, Square Keys, Rectangular Keys, Plain Taper Keys, Gib-Head Taper Keys, Perpendicular Pins and the Feather Key.
Machine Keys have a wide range of applications in our daily lives. Machine Keys hold machinery parts in place or align components. Machine Keys are used in power transmissions, motors, speed reducers, variators, automobiles, motorcycles, and industrial machines.
Each machine key has few attributes such as width, height, length, finish, and tolerance. It is important to understand the tolerance attribute. There are two type of tolerance. An oversize tolerance machine key provides a slightly tighter fit and an undersize tolerance machine key provides a slightly looser fit. Tolerance is specified in standards such as DIN6885 and JIS B 1301. Machine keys with metric (mm) measurement are almost always made as close tolerance undersized, whereas machine keys with imperial measurement (inch) tend to be made in both oversize and undersize tolerance sizes.
Sometimes the term machine key and keystock are used interchangeably. However, the term keystock refers to a “stock” of material that is 300mm, 1 foot or longer in length, and from which machine keys are made. Machine key refers to a finished product that is installation ready. Keystock is often used in post market repairs or small production. Bdo custom quick slot 2018 jackpot. Keystock and machine keys are made from material such as carbon steel, stainless steel or alloy steel.
Parallel Machine Keys
Parallel keys are the most widely used. They have a square or rectangular cross-section. Parallel keys include Square Keys, Rectangular Keys. The shaft is usually key slotted for the full length for the shaft or slotted from the end of the shaft and along the length of the shaft for a distance greater than the length of the key to be used. Parallel keys can be installed by lining up the keyslots in the shaft and the component and then pressing the parallel key between the slots. There are three shapes of parallel keys depending on the ends of the keys. The end of a key can be either square or radius or round. The type of ends are referred to as “Forms”. Form A refers to a round end and Form B refers to a square end. For a Form A key, both ends are round, sometimes called the double round key. Form B key has both ends square. Form AB is a key with one end round and one end square, sometimes called the single round key.
Woodruff Keys
A woodruff key is a half moon shaped key that is inserted into a curved slot in the shaft. Woodruff keys are machined metal fasteners used to transfer torque from a shaft to gears where tight tolerances and functionality are vital. They are precisely a fail-safe device to ensure that the key breaks before the gears do, cutting replacement costs down significantly. Woodruff keys are used in a variety of applications including, lawn and garden equipment, automobiles, trucks, pumps, electric motors, agricultural equipment and other heavy equipment. They are used more often than machine keys in automated assemblies, such as automotive, because they are easier to feed and maintain tight tolerances. No matter the application, the woodruff key’s job is the same, to transfer the torque by locking the gears into the crank shaft.
Woodruff Key Slot Dimension Tolerances
Machine Key Standards
There are two sets of standards in the world – one for the imperial (inch) and another for metric (mm). DIN 6885 and JIS B 1301 deals with metric keys and ANSI B17.1 and BS 46 deals with imperial machine keys. These standards define the material, dimensions, tolerance and finish of the keys. There is a great similarity between DIN 6885 and JIS B 1301-1996. DIN 6885 is more popular in Europe and JIS in Asia.
- ANSI B17.1 By American National Standard Institute
- DIN6885 from German
- JIS B 1301-1996 from Japan
- BS 46 from England
- GB 1567-2003 from China
Let Machine Keystock ship your machine keystock to you fast as the lowest price!
Metric Woodruff Key Chart
Need Small Quantities Fast?
This is our retail website for small quantities of the most popular machine keys shipped within 48 hours.
Get a Wholesale Quote
Metric Woodruff Key Dimensions
Machine keys are sometimes called shaft keys, or sunk keys, and are available in a variety of types and include Parallel Keys, Flat Keys, Woodruff Keys, Square Keys, Rectangular Keys, Plain Taper Keys, Gib-Head Taper Keys, Perpendicular Pins and the Feather Key.
Machine Keys have a wide range of applications in our daily lives. Machine Keys hold machinery parts in place or align components. Machine Keys are used in power transmissions, motors, speed reducers, variators, automobiles, motorcycles, and industrial machines.
Each machine key has few attributes such as width, height, length, finish, and tolerance. It is important to understand the tolerance attribute. There are two type of tolerance. An oversize tolerance machine key provides a slightly tighter fit and an undersize tolerance machine key provides a slightly looser fit. Tolerance is specified in standards such as DIN6885 and JIS B 1301. Machine keys with metric (mm) measurement are almost always made as close tolerance undersized, whereas machine keys with imperial measurement (inch) tend to be made in both oversize and undersize tolerance sizes.
Sometimes the term machine key and keystock are used interchangeably. However, the term keystock refers to a “stock” of material that is 300mm, 1 foot or longer in length, and from which machine keys are made. Machine key refers to a finished product that is installation ready. Keystock is often used in post market repairs or small production. Bdo custom quick slot 2018 jackpot. Keystock and machine keys are made from material such as carbon steel, stainless steel or alloy steel.
Parallel Machine Keys
Parallel keys are the most widely used. They have a square or rectangular cross-section. Parallel keys include Square Keys, Rectangular Keys. The shaft is usually key slotted for the full length for the shaft or slotted from the end of the shaft and along the length of the shaft for a distance greater than the length of the key to be used. Parallel keys can be installed by lining up the keyslots in the shaft and the component and then pressing the parallel key between the slots. There are three shapes of parallel keys depending on the ends of the keys. The end of a key can be either square or radius or round. The type of ends are referred to as “Forms”. Form A refers to a round end and Form B refers to a square end. For a Form A key, both ends are round, sometimes called the double round key. Form B key has both ends square. Form AB is a key with one end round and one end square, sometimes called the single round key.
Woodruff Keys
A woodruff key is a half moon shaped key that is inserted into a curved slot in the shaft. Woodruff keys are machined metal fasteners used to transfer torque from a shaft to gears where tight tolerances and functionality are vital. They are precisely a fail-safe device to ensure that the key breaks before the gears do, cutting replacement costs down significantly. Woodruff keys are used in a variety of applications including, lawn and garden equipment, automobiles, trucks, pumps, electric motors, agricultural equipment and other heavy equipment. They are used more often than machine keys in automated assemblies, such as automotive, because they are easier to feed and maintain tight tolerances. No matter the application, the woodruff key’s job is the same, to transfer the torque by locking the gears into the crank shaft.
Woodruff Key Slot Dimension Tolerances
Machine Key Standards
There are two sets of standards in the world – one for the imperial (inch) and another for metric (mm). DIN 6885 and JIS B 1301 deals with metric keys and ANSI B17.1 and BS 46 deals with imperial machine keys. These standards define the material, dimensions, tolerance and finish of the keys. There is a great similarity between DIN 6885 and JIS B 1301-1996. DIN 6885 is more popular in Europe and JIS in Asia.
- ANSI B17.1 By American National Standard Institute
- DIN6885 from German
- JIS B 1301-1996 from Japan
- BS 46 from England
- GB 1567-2003 from China
Let Machine Keystock ship your machine keystock to you fast as the lowest price!
Metric Woodruff Key Chart
Need Small Quantities Fast?
This is our retail website for small quantities of the most popular machine keys shipped within 48 hours.
Get a Wholesale Quote
Metric Woodruff Key Dimensions
Woodruff Key Metric Conversion
