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Chain & Sprocket

Overview​

  • What they are:

    • Sprockets are toothed wheels, and a chain is made of connected metal links that fit onto those teeth.

  • What they do:

    • When a sprocket turns, its teeth grab the chain and pull it, which makes another sprocket turn. This is a strong way to transfer power.

  • Pros:

    • Very strong and tough for heavy loads, no slipping (motion is precise), can work over moderate distances. Can make chains almost any size.

  • Cons:

    • Can be noisy, needs oiling and cleaning, not as smooth as belts, chains can stretch over time, heavy.

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Argos Standard​

Chain
Argos uses #25 Roller Chain

  • A common ANSI standard chain, identified by its 1/4-inch pitch
  • Suitable for light-duty applications

Standard Sprocket
Standard Sprocket Size: 16 Teeth 1/2" hex

How to Calculate Chain Center Distance​

Chain Calculator

Step 1: Select Chain Type
Step 2: Input Sprockets
Pitch Diameter: 1.273"
Pitch Diameter: 1.273"
Step 3: Desired Center Distance
Add 0.018" for #25 chain tension if needed
Ratio: 1.00:1
Step 4: Chain Options
Enter sprocket sizes and center distance to see chain options

External Calculator Reference​

Center Distance Calculator

If Sprockets are the Same Size

  • #25 chain - Center distance should be a multiple of 0.25 in
  • #35 chain - Center distance should be a multiple of 0.25 in

How to Tension Chain​

Adding Center Distance​

For #25 chain add 0.018 inch

Chain Turn Buckles​

  • If the chain does not have to go around a full loop, you can use a turn buckle

  • Provides adjustable tensioning mechanism

  • Special link that is half the standard distance

  • Used for fine-tuning chain length when full links don't provide the exact center distance needed

How to Size Chain​

Quick Reference​

#25 Roller Chain​

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Stocked Sizes Available lengths: Yes

Where to Buy #25 Roller Chain - WCP

#25 16-Tooth Sprocket (1/2" Hex)​

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Stocked Sizes Available quantities: 16 tooth (8)

Where to Buy 16T Sprockets - West Coast Products

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Stocked Sizes Available quantities: Yes

Where to Buy Half Links - WCP

master link

Stocked Sizes Available quantities: Yes

Where to Buy Master Links - WCP

Chain Tensioners​

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Stocked Sizes Available quantities: Yes

Where to Buy Chain Tensioners - West Coast Products

#35 16-Tooth Sprocket (1/2" Hex)​

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Stocked Sizes Available quantities: 16 tooth (8)

Where to Buy 16T Sprockets - West Coast Products