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Flat Idler Pulley and Flat Drive Pulley (Sheave) Sizes
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| Part Number | A | B | C | D | Crown |
| Flat Idler 1.75" x .75" | 2.22" | 1.75" | 0.75" | 0.93" | 0.016" |
| Flat Idler 1.88" x .50" | 2.12" | 1.88" | 0.51" | 0.70" | 0.012" |
| Flat Idler 1.88" x .75" | 2.00" | 1.88" | 0.75" | 0.97" | 0.016" |
| Flat Idler 1.88" x 1.38" | 2.09" | 1.88" | 1.38" | 1.56" | 0.016" |
| Flat Idler 2" x 1" | 2.35" | 2.00" | 1.00" | 1.15" | 0.020" |
| Flat Idler 2.25" x .75" | 2.72" | 2.25" | 0.75" | 0.93" | 0.016" |
| Flat Idler 2.5" x .75" | 2.97" | 2.50" | 0.75" | 0.93" | 0.016" |
| Flat Idler 2.5" x 1" | 2.97" | 2.50" | 1.00" | 1.18" | 0.02" |
| Flat Idler 2.75" x .75" | 3.22" | 2.75" | 0.75" | 0.93" | 0.016" |
| Flat Idler 2.75" x .86" | 3.19" | 2.75" | 0.86" | 1.05" | 0.018" |
| Flat Idler 2.75" x 1" | 3.22" | 2.75" | 1.00" | 1.18" | 0.02" |
| Flat Idler 3" x .75" | 3.50" | 3.00" | 0.75" | 1.01" | 0.016" |
| Flat Idler 3" x 1.01" | 3.47" | 3.00" | 1.01" | 1.18" | 0.02" |
| Flat Idler 3.13" x .75" | 4.00" | 3.12" | 0.75" | 1.11" | 0.016" |
| Flat Idler 3.5" x .75" | 4.12" | 3.50" | 0.75" | 0.98" | 0.016" |
| Flat Idler 3.5" x .97" | 3.97" | 3.50" | 0.97" | 1.15" | 0.02" |
| Flat Idler 4" x .72" | 4.60" | 4.00" | 0.72" | 1.06" | 0.016" |
| Flat Idler 4" x .86" | 4.75" | 4.00" | 0.86" | 1.34" | 0.018" |
| Flat Idler 4" x 1" | 4.62" | 4.00" | 1.00" | 1.18" | 0.02" |
| Flat Idler 4.5" x .96" | 4.96" | 4.50" | 0.96" | 1.13" | 0.02" |
| Flat Idler 5" x 1.25" | 5.88" | 5.00" | 1.25" | 1.56" | 0.03" |
| Flat Idler 5.5" x 1 | 6.00" | 5.50" | 1.00" | 1.26" | 0.02" |
| Flat Idler 6" x .75" | 6.50" | 6.00" | 0.75" | 0.99" | 0.016" |
| Flat Idler 6" x 1" | 6.50" | 6.00" | 1.00" | 1.28" | 0.02" |
These flat idler pulleys and flat drive sheaves are designed for DuraBelt's flat urethane belts, but they also work well with any kind of flat belt. Uses 6203 bearings -- 12 mm wide, 17 mm bore.
Our flat idler pulleys and flat drive sheaves are made from nylon reinforced with fiberglass and ABEC-1 ball bearings. This nylon material is easy to machine on a lathe, and there is no fiberglass dust, as long as you do not grind it. We can cut down the flanges and/or add grooves (e.g. Poly-Vee grooves) at a slight extra cost.
Our idler pulleys can be converted to drive pulleys with our drive adapters. Click here for Flat Pulley specs.
Maximum bore diameter without an adapter is 17mm (0.669")
Click here to see BORE ADAPTERS or DRIVE ADAPTERS.
For the best in flat idler sheaves and flat drive pulleys, insist on DuraBelt.
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