Pulley SPA 71/1 for Taper Lock 1108 — Optibelt/Desch
The offer includes only the pulley itself. The Taper Lock bushing is not included; it is purchased separately.
Single-groove SPA 71/1 pulley for an industrial belt drive, in a solid design with an empty seat for bushing 1108. Select the bushing to match the seat type and shaft diameter. Type 1108 alone does not specify the shaft bore diameter.
Select a Taper Lock 1108 bushing
Three selected bores are shown below. A tile opens a separate offer; it does not add the bushing to the basket automatically.
Check bushing price and availability on its card. The category for the entire type may contain different brands.
Dimensions and specifications
| Designation | TB SPA 71/1 |
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| Pulley profile | SPA |
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| Number of grooves | 1 |
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| Datum diameter D | 71 mm |
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| Outside diameter Da | 76,6 mm |
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| Rim width B | 20 mm |
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| Full axial length L including hub | 22 mm |
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| Required bushing type | Taper Lock 1108 — separately |
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| Design | Solid pulley, without bushing |
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| Material | Cast iron |
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| Belt profiles | A, HA, AX, SPA, XPA |
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| Mass of the pulley alone | 0,350 kg |
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| OEM code | AT00711 |
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Rim width B and total axial length L are different dimensions. When selecting, check data for the specific variant in the table and bushing type compatibility with the pulley seat and shaft diameter.
Selection and applications
Select belt profile, datum diameter, number of grooves, ratio and drive load. The bushing must be type 1108 with a bore suitable for the shaft; also check the key connection design. NERON in Piła helps select power transmission components. Sold from 1 piece, fulfilment within 48 hours. The price is for one pulley without bushing.
Taper Lock 1108 installation tips
- Stop the drive and secure it against starting. Check the components and bushing compatibility with the pulley and shaft.
- Clean and degrease the tapered surfaces of the bushing and pulley, and the shaft. Match the half-holes. Prepare the screw threads according to the manufacturer's instructions; do not lubricate the taper.
- Seat the assembly on the shaft, check the key and pulley alignment. Tighten the screws evenly with a torque wrench.
- For the Optibelt 1108 bushing, the instructions specify two screws and 5,7 Nm torque. For a bushing from another manufacturer, check its instructions — do not transfer this value automatically.
- After brief operation, approx. 0,5–1 hours, stop and secure the drive, then check tightening. Check alignment and belt tension.
This is a summary, not a replacement for machine and bushing documentation. Optibelt installation and maintenance instructions.
The graphics are illustrative and are not photos of the specific piece. Dimensions and specifications of the variant are in the table. The diagram helps interpret dimension labels; it is not manufacturing documentation.
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