Aetna Heavy Duty Double Pitch Idler Sprocket, Teeth 8
Available
This is the Aetna Heavy Duty Double Pitch Idler Sprocket, 8 Tooth, 1.63" Pitch.
Aetna heavy duty idler sprockets for extended pitch chain. They are made from heavier gauge steel for greater life and load carrying capacity. The teeth are accurately contoured and hardened to resist wear and damage to the chain, and the idler installs on standard 1/2" or 5/8" bolts. Part number A0150816.
Aetna is a brand of Aetna Bearing Company, based in Livonia, Michigan, USA.
Where this product is used
- Gathering chains on corn heads and other harvesting equipment
- Extended pitch chain drives that need a tensioner or a direction change
- General workshop and maintenance replacement of worn chain idlers
Features
- Case-hardened teeth prolong chain and idler life
- Accurately contoured teeth cut from heavier gauge steel for greater life and load carrying capacity
- Oversize factory-packed lubricant chamber, so no relubrication is needed
- Hardened bearing races, with accurately formed outer and inner rings for smooth running
- Self-contouring, free-running, self-wiping seal that keeps positive contact when the idler is misaligned
- Full ball complement for durability
Key specifications
| Specification | Detail |
|---|---|
| Brand | Aetna |
| Product type | Heavy Duty Double Pitch Idler Sprocket |
| Chain number | 555 and 550 |
| Pitch | 1.630" (41.402mm) |
| Number of teeth | 8 |
| Outside diameter range | 4-3/4" |
| Nominal bore | 5/8" |
| Model codes | AG2565-3AF and AG2566-4AF |
| Sizes | 2 |
Available sizes
| Model | SKU | Chain no. | Pitch, in (mm) | Teeth | Bore, in | OD, in (mm) | Weight |
|---|---|---|---|---|---|---|---|
| AG2565-3AF | A0150816 | 555 | 1.630 (41.402) | 8 | 0.643 to 0.649 | 4-3/4 (120.65) | 1.50 lb (0.680kg) |
| AG2566-4AF | A0150817 | 550 | 1.630 (41.402) | 8 | 0.630 to 0.636 | 4-3/4 (120.65) | 1.50 lb (0.680kg) |
Fitting and use
Check the chain number and pitch of your chain against the specifications before ordering, and fit the idler on a bolt that matches the bore.
The bearing is sealed and lubricated at the factory. Keep water, grit and solvents away from the seals, and replace the idler if the bearing runs rough or noisy.
Choosing the right option
An idler sprocket must match the chain it runs on. Match the chain number and the pitch, then the number of teeth and the bore for the bolt or shaft it mounts on.
The model codes, chain numbers, pitches and dimensions for each size are in the sizes table.
Related idlers: Aetna 1.63" Pitch 8 Tooth Heavy Duty Double Pitch Idler Sprocket 5/8" Bore - AG2565-2AF, Aetna 1.63" Pitch 8 Tooth Heavy Duty Double Pitch Idler Sprocket 5/8" Bore - AG2566-2AF, Aetna 1-1/2" Pitch 8 Tooth Heavy Duty Double Pitch Idler Sprocket 5/8" Bore - AG2427.
| Option | Part number | SKU |
|---|---|---|
| 8 | A0150816 | |
| 8-AG2566-4AF | A0150817 |
Product details
| Model | AG2565-3AF |
|---|---|
| Model | AG2565-3AF |
| Chain Number | 555 |
| Pitch | 1.630" (41.402mm) |
| Number of Teeth | 8 |
| Roller Diameter | 21/32" (16.668mm) |
| Bore (A) | 0.643 to 0.649" (16.332 to 16.484mm) |
| Hub diameter (B) | 2-5/64" (52.784mm) |
| Outside diameter (C) | 4-3/4" (120.65mm) |
| Tooth width (D) | 7/16" (11.112mm) |
| Dimension E | 31/32" (24.606mm) |
| Weight | 1.50 lb (0.680kg) |
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Aetna Heavy Duty Double Pitch Idler Sprocket, 8 Tooth, 1.63" Pitch: 8
SKU: A0150816 | Model: AG2565-3AF
Aetna heavy duty double pitch idler sprocket, 1.63" pitch, 8 teeth, 5/8" bore, chain number 555, model AG2565-3AF.


