Don Dye V-Belt Idler Pulley A Section, 2.5-AVI-56
Out of stock
Don Dye single row bearing V-belt idler pulleys, a complete, self-contained pressed steel idler for the V side of the belt, made from 14 gauge steel. Part number A0149970.
Don Dye is a brand of the Don Dye Company, based in Kingman, Kansas, USA.
Where this product is used
- V-belt drives that need a tensioner or a direction change
- Agricultural and general machinery
- General workshop and maintenance replacement of worn idlers
Features
- Single-row, radial-type, precision ground ball bearing with a 60% fill of high-temperature grease
- Extended bearing inner ring gives clearance for abutting parts and more support on the shaft
- Pressed steel pulley with riveted construction (no spot welding)
- Smoothly rolled-out edges that avoid belt chafing
- Weep holes on the rivet circle drain water when the pulley is mounted horizontally
- Pre-lubricated precision ball bearing in 52100 bearing steel, with contact-type seals and no re-lubrication required
- Compression ring between the bearing outer ring and the pulley pocket spreads load evenly across the outer race
- Bore sized for standard 1/2" or 5/8" bolts, 1/2" removable reduction bush fitted, 3/8" bush available
Key specifications
| Specification | Detail |
|---|---|
| Brand | Don Dye |
| Product type | V-Belt Idler Pulley |
| Series | Single Row Bearing |
| Bearing | Single row ball bearing, pre-lubricated, contact seals |
| Belt section | A |
| Outside diameter range | 2.5 to 4" |
| Pulley width (W) range | 0.63 to 0.86" |
| Mounting | Bore sized for 1/2" or 5/8" bolts, 1/2" removable reduction bush fitted, 3/8" bush available |
| Steel gauge | 14 |
| Model codes | AVI-40, 56RG-54, AVI-56 and AVI-64 |
| Sizes | 4 |
Available sizes
| Model | SKU | OD, in (mm) | Pulley width W, in (mm) | Belt section | Weight |
|---|---|---|---|---|---|
| AVI-40 | A0149970 | 2.5 (63.5) | 0.63 (16) | A | 0.46 lb (0.20kg) |
| 56RG-54 | A0149969 | 3.5 (88.9) | 0.86 (21.84) | A | 0.66 lb (0.30kg) |
| AVI-56 | A0149971 | 3.5 (88.9) | 0.86 (21.84) | A | 0.66 lb (0.30kg) |
| AVI-64 | A0149972 | 4 (101.6) | 0.84 (21.33) | A | 0.77 lb (0.35kg) |
Fitting and use
Mount the idler on a bolt that matches the bore, or the reduction bush where one is fitted, and clamp through the bush or inner ring only so the pulley rim turns freely on the bearing.
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
Match the idler to the belt it runs on (V-belt section), then the outside diameter, the bore or bolt size, and the width the belt needs.
The model codes and dimensions for each size are in the sizes table. If you have the old idler, match its model code or measure the outside diameter, bore and width.
Pulley width (W) is the overall width of the pulley.
Related idlers: Don Dye V-Belt Idler Pulley - Single Row Bearing, B Section, 3.75 to 6.75" OD, Don Dye V-Belt Idler Pulley - Single Row Bearing, A and B Section, 5" OD - ABVI-80, Don Dye V-Belt Idler Pulley, A and B Section, 5" OD, Plain Steel One Side - TABVI-80PLAIN.
| Option | Part number | SKU |
|---|---|---|
| 2.5 | A0149970 | |
| 2.5-AVI-56 | A0149971 | |
| 3.5 | A0149969 | |
| 4 | A0149972 |
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Don Dye V-Belt Idler Pulley - Single Row Bearing, A Section, 2.5 to 4" OD: 2.5-AVI-56
SKU: A0149971 | Model: AVI-56
Don Dye V-belt idler pulley A section, 3.5" OD, 0.86" wide, model AVI-56.
