POSI LOCK PSL-G
PSL-G / Miki Pulley (Official website) / Listed on page 16 of the document
Locking-fit fastening element for large-diameter hubs with reduced hub outer diameter. Includes design criteria for PSL-G sizes 19 to 120 and a list of minimum hub outer diameters.
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Specifications
| Applicable shaft diameter d | 19～120 mm |
|---|
PSL-G model comparison
Compare 28 models in the same series by specification.
| Model | Clamping bolt | Clamping bolt tightening torque | Removal screw hole |
|---|---|---|---|
| POSI LOCK PSL-G This product | — | — | — |
| PSL-G-100 | 14-M12×30 | 142 N・m | 3-M14 |
| PSL-G-110 | 14-M12×30 | 142 N・m | 3-M14 |
| PSL-G-120 | 16-M12×30 | 142 N・m | 3-M14 |
| PSL-G-19 / PSL-G-19-C | 8-M6×18 | 17 N・m | 2-M8 |
| PSL-G-20 / PSL-G-20-C | 8-M6×18 | 17 N・m | 2-M8 |
| PSL-G-22 / PSL-G-22-C | 8-M6×18 | 17 N・m | 2-M8 |
| PSL-G-24 / PSL-G-24-C | 8-M6×18 | 17 N・m | 2-M8 |
| PSL-G-25 / PSL-G-25-C | 8-M6×18 | 17 N・m | 2-M8 |
| PSL-G-28 / PSL-G-28-C | 10-M6×18 | 17 N・m | 2-M8 |
| PSL-G-30 / PSL-G-30-C | 10-M6×18 | 17 N・m | 2-M8 |
| PSL-G-32 / PSL-G-32-C | 12-M6×18 | 17 N・m | 2-M8 |
| PSL-G-35 / PSL-G-35-C | 12-M6×18 | 17 N・m | 2-M8 |
| PSL-G-38 / PSL-G-38-C | 14-M6×18 | 17 N・m | 2-M8 |
| PSL-G-40 / PSL-G-40-C | 14-M6×18 | 17 N・m | 2-M8 |
| PSL-G-42 / PSL-G-42-C | 12-M8×22 | 41 N・m | 2-M10 |
| PSL-G-45 / PSL-G-45-C | 12-M8×22 | 41 N・m | 2-M10 |
| PSL-G-48 / PSL-G-48-C | 12-M8×22 | 41 N・m | 2-M10 |
| PSL-G-50 / PSL-G-50-C | 12-M8×22 | 41 N・m | 2-M10 |
| PSL-G-55 / PSL-G-55-C | 14-M8×22 | 41 N・m | 2-M10 |
| PSL-G-60 / PSL-G-60-C | 14-M8×22 | 41 N・m | 2-M10 |
| PSL-G-65 | 16-M8×22 | 41 N・m | 2-M10 |
| PSL-G-70 | 14-M10×25 | 82 N・m | 3-M12 |
| PSL-G-75 | 14-M10×25 | 82 N・m | 3-M12 |
| PSL-G-80 | 14-M10×25 | 82 N・m | 3-M12 |
| PSL-G-85 | 16-M10×25 | 82 N・m | 3-M12 |
| PSL-G-90 | 16-M10×25 | 82 N・m | 3-M12 |
| PSL-G-95 | 18-M10×25 | 82 N・m | 3-M12 |
How to choose Friction fastener
Points to check when selecting, with the values for this product (POSI LOCK PSL-G).
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1. Select the Applicable Shaft Diameter
This product: Applicable shaft diameter d 19～120 mmFriction clamping devices are sized for each shaft diameter, and the listed products cover a range of 19 to 120 mm. Shaft tolerance and surface roughness affect frictional force, so confirm that the shaft meets the tolerance specified by the manufacturer. When using a hollow shaft, check whether it will deform under contact pressure.
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2. Allow Margin in Allowable Torque
The maximum transmittable torque for the listed products is 6 to 1760 N·m. Consider starting shocks and fluctuating loads, and select a size whose allowable torque is at or above the actual torque multiplied by a service factor appropriate to the nature of the load.
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3. Verify Combined Thrust Load
Axial force is also transmitted by friction, so check the allowable thrust force (listed range 2100 to 70300 N). When torque and thrust act simultaneously, evaluation is generally based on their combined effect, so verify against the manufacturer's calculation formula.
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4. Check Hub Outer Diameter and Strength Against Contact Pressure
The outer diameter of the clamping device corresponds to the hub bore diameter. Because contact pressure from the outer ring acts on the hub, determine the minimum hub outer diameter from the hub contact pressure and the yield point of the hub material. If a smaller outer diameter is required, refer to the types that include a minimum hub outer diameter selection table.
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5. Confirm Overall Length Relative to Hub Width
Confirm that the axial overall length of the clamping device fits within the hub width, and that there is sufficient space for bolt heads and tools. If the hub width is insufficient, the contact area is reduced and the specified transmission capacity cannot be achieved.
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6. Tightening Torque Control and Operating Environment
The clamping bolts must be tightened evenly to the specified torque (listed range 1 to 34 N·m); insufficient tightening causes slippage. The listed products have an operating temperature range of -40 to 150 °C. In humid environments, select specifications with rust-preventive treatment such as electroless Ni plating.
This guide was written by AI based on the listed products' documents and specification items.
Description
To prevent insufficient fastening force caused by hub deformation, the minimum hub outer diameter is calculated from the yield point stress of the material and the hub side pressure. Calculation formulas for the service factor, combined load, and maximum bore diameter of hollow shafts are also provided.
Features
- Selection table for minimum hub outer diameter available
- Service factor settings according to load characteristics
- PSL-G(C) with simple rust-prevention type available
Applications
- Fastening of power transmission shafts and hubs
- Applications combined with hollow shafts
FAQ
- Q. What types of shaft-to-hub fastening can POSI LOCK PSL-G (series PSL-G) be used for?
- A. It is used for fastening power transmission shafts and hubs. It also supports applications combined with hollow shafts. The applicable shaft diameter d is 19 to 120 mm.
- Q. How should the required minimum hub outer diameter be determined for POSI LOCK PSL-G?
- A. The minimum hub outer diameter is calculated from the yield point stress of the material and the hub side pressure. A selection table for the minimum hub outer diameter is also provided.
- Q. How should load conditions be set for POSI LOCK PSL-G?
- A. Set the service factor according to the nature of the load. Calculation formulas for the service factor and combined load are also provided.
- Q. Is a simple rust-prevention type available for POSI LOCK PSL-G(C)?
- A. Yes, PSL-G(C) is available in a simple rust-prevention type.
Written by AI based on the content of the source documents.
Source documents
- Catalog POSI LOCK PSL-G / PSL-D 設計上の確認事項・製品仕様 24 pages Open page 16
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