What does 3/8 pitch mean on a chainsaw?
What does 3/8 pitch mean on a chainsaw?
Pitch. Chain pitch is the size of the chain and is defined as the distance between any three consecutive rivets divided by two. Oregon chain is made in several pitches – 1/4″ is the smallest, 3/8″ is the most popular, and 3/4” is the largest.
What is pitch on chain?
Chain size is commonly referred to as Pitch. In actuality, chain size is determined by the chain pitch. Pitch refers to the measurement from one roller-pin center to the next roller pin center of a given chain. ANSI (American National Standard Institute) chain pitch is always measured in 1/8” increments.
How do you measure a 3/8 chain?
It is determined by measuring the distance between any three consecutive drive links and dividing by two. Example: 3/4″ divided by 2 = 3/8″. Sometimes pitch is expressed as a fraction: 3/8″ and sometimes it is expressed as a decimal: . 404″.
Are all 3 8 chainsaw chains the same?
The most common are 3/8″ and . 325″. Be aware that there are two types of chain that are both 3/8″ pitch, one is the “standard” type generally used on saws 55 cc and up, the other has the same pitch but is called “low profile” and is used on smaller saws – up to 45 cc or so.
How do you measure the pitch on a chainsaw chain?
To determine the pitch (chain size), you’ll need to measure the distance between any three consecutive rivets, then divide the result by 2. The rivets are the small, round pegs/studs that hold the chain segments together. Measure from the first to the third, then divide that number in half to get your chain pitch.
How do you choose the pitch of a chain?
- Selection Procedure.
- Determine the Class of Load.
- Lubricant.
- Note : If table 1 does not list your equipment, go by its similarity to a listed item.
- Establish the Design Horsepower.
- Final Selection of Chain.
- Select the Large Sprocket.
- Determine Chain Length.
How do I know what size chain I need for my chainsaw?
To get the correct size, simply count 3 rivets on the chain and measure the distance between them from the centre points. Now divide this by half to get your size. As an example, three rivets that measure ½ an inch across divided by two gives you a pitch of a ¼ inch.
What size file for 3 8 chainsaw chain?
For 3/8LP and .325 pit chains, use 4.0mm (5/32″) file. For 3/8 pitch chain, use a 4.8mm (3/16″) file. For the 404 pitch chain, the recommended is 5.5mm (7/32″) file. Still confused? Don’t worry, once you get the hang of knowing your chain pitch, you’ll know quickly the type of file and size you’ll need.
What size file do I need for my Chainsaw?
For this reason, only use round files intended for chainsaw sharpening. Chains with a pitch of 6 mm (1/4 inch and 9.5 mm (3/8 inch) generally take a file that’s 5/32 inch, or 4mm. Chains with a pitch of a .325 and .404 will take a file that’s 4.76 mm or 5.56 mm (3/16 or 7/32 inch), respectively.
What is a double pitch roller chain?
Double Pitch Roller Chain has the same basic construction as Standard Roller Chain, but double pitch means the chain pitch is twice as long, has flat-shaped link plates, and longer attachments. This series is regulated by ANSI B29.4, ISO 1275-A, and JIS B 1803.
What is a chain pitch?
Chain pitch is the calculation used to determine the size of a chain.
