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LOVEJOY L Type Spiders, Open Center
Lovejoy L type coupling spiders are used with L type hubs without keyways for preventing parallel and shaft misalignment. The open centre design is engineered for applications where the distance between shaft ends (BSE) is very tight and there is no room for the centre section. They provide sta...ndard shaft-to-shaft connection for heavy-duty applications while delivering torque up to 12500 inch-lb, at temperatures ranging from -60 to 450 degrees Fahrenheit. Raptor Supplies also offers L type solid centre spiders with keyway hubs for high-speed applications.Read more
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I| Style | Model | Material | Parallel Misalignment | Angular Misalignment | Outside Dia. | Color | Type | Cubic Inches | Max. Parallel Misalignment | Price (ex. VAT) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 68514434517 | Bronze | 0.01" | 0.5° | - | Bronze | L | 21.824 cu. in. | 0.01" | €637.71 | |
| B | 68514411073 | Bronze | 0.01" | 0.5° | 2 3/25" | Bronze | L | 1.978 cu. in. | 0.01" | €56.94 | |
| A | 68514425767 | Bronze | 0.01" | 0.5° | 6.19" | Bronze | L | 55.558 cu. in. | 0.01" | €1,780.72 | |
| B | 68514410409 | Bronze | 0.01" | 0.5° | - | Bronze | L | 0.8 cu. in. | 0.01" | €36.88 | |
| B | 68514410198 | Bronze | 0.01" | 0.5° | 1.07" | Bronze | L | 0.481 cu. in. | 0.01" | €31.80 | |
| B | 68514410624 | Bronze | 0.01" | 0.5° | 1 3/4" | Bronze | L | 1.347 cu. in. | 0.01" | €54.22 | |
| B | 68514411497 | Bronze | 0.01" | 0.5° | - | Bronze | L | 2.839 cu. in. | 0.01" | €100.98 | |
| B | 68514412004 | Bronze | 0.01" | 0.5° | 3 3/4" | Bronze | L | 12.375 cu. in. | 0.01" | €390.00 | |
| B | 68514412277 | Bronze | 0.01" | 0.5° | 4 1/2" | Bronze | L | 17.82 cu. in. | 0.01" | €585.09 | |
| B | 68514411727 | Bronze | 0.01" | 0.5° | 3.31" | Bronze | L | 8.217 cu. in. | 0.01" | €121.26 | |
| C | 68514425309 | Hytrel | 0.015" | 0.5° | 1 3/4" | Tan | L | 1.347 cu. in. | 0.015" | €38.16 | |
| D | 68514438099 | Hytrel | 0.015" | 0.5° | 4 1/2" | Tan | L | 17.82 cu. in. | 0.015" | €207.59 | |
| C | 68514411486 | Hytrel | 0.015" | 0.5° | - | Tan | L | 3.935 cu. in. | 0.015" | €127.13 | |
| C | 68514425310 | Hytrel | 0.015" | 0.5° | 2 3/25" | Tan | L | 1.978 cu. in. | 0.015" | €50.89 | |
| C | 68514438097 | Hytrel | 0.015" | 0.5° | 3.31" | Tan | L | 8.217 cu. in. | 0.015" | €146.53 | |
| C | 68514425308 | Hytrel | 0.015" | 0.5° | - | Tan | L | 0.8 cu. in. | 0.015" | €26.59 | |
| E | 68514438098 | Hytrel | 0.015" | 0.5° | 3 3/4" | Tan | L | 12.375 cu. in. | 0.015" | €176.03 | |
| C | 68514412400 | Hytrel | 0.015" | 0.5° | - | Tan | L | 21.824 cu. in. | 0.015" | €256.01 | |
| F | 68514410968 | SOX Rubber | 0.015" | 1° | 2 3/25" | Black | L | 1.978 cu. in. | 0.015" | €17.61 | |
| F | 68514437880 | SOX Rubber | 0.015" | 1° | 3 3/4" | Black | L | 12.375 cu. in. | 0.015" | €58.51 | |
| F | 68514437881 | SOX Rubber | 0.015" | 1° | 4 1/2" | Black | L | 17.82 cu. in. | 0.015" | €71.22 | |
| F | 68514410620 | SOX Rubber | 0.015" | 1° | 1 3/4" | Black | L | 1.347 cu. in. | 0.015" | €12.82 | |
| F | 68514411492 | SOX Rubber | 0.015" | 1° | - | Black | L | 3.935 cu. in. | 0.015" | €35.35 | |
| G | 68514412612 | SOX Rubber | 0.015" | 1° | 6.19" | Black | L | 55.558 cu. in. | 0.015" | €133.57 | |
| H | 68514410393 | SOX Rubber | 0.015" | 1° | - | Black | L | 0.8 cu. in. | 0.015" | €7.02 | |
| F | 68514412406 | SOX Rubber | 0.015" | 1° | - | Black | L | 21.824 cu. in. | 0.015" | €80.29 | |
| F | 68514411711 | SOX Rubber | 0.015" | 1° | 3.31" | Black | L | 8.217 cu. in. | 0.015" | €40.68 | |
| I | 68514412006 | Urethane | 0.015" | 1° | 3 3/4" | Blue | L | 12.375 cu. in. | 0.015" | €169.35 | |
| I | 68514411499 | Urethane | 0.015" | 1° | - | Blue | L | 3.935 cu. in. | 0.015" | €67.68 | |
| I | 68514411075 | Urethane | 0.015" | 1° | 2 3/25" | Blue | L | 1.978 cu. in. | 0.015" | €28.07 | |
| I | 68514410626 | Urethane | 0.015" | 1° | 1 3/4" | Blue | L | 1.347 cu. in. | 0.015" | €18.58 | |
| I | 68514411729 | Urethane | 0.015" | 1° | 3.31" | Blue | L | 8.217 cu. in. | 0.015" | €139.95 | |
| I | 68514412280 | Urethane | 0.015" | 1° | 4 1/2" | Blue | L | 17.82 cu. in. | 0.015" | €182.77 | |
| I | 68514412417 | Urethane | 0.015" | 1° | - | Blue | L | 21.824 cu. in. | 0.015" | €220.30 | |
| I | 68514410411 | Urethane | 0.015" | 1° | - | Blue | L | 0.8 cu. in. | 0.015" | €15.76 |
Features
- Material Relevance:
- Nitrile Butadiene (Buna N) or SOX NBR: It is a highly flexible material providing oil-resistant performance. It features rubber-like resilience & elastic properties, making it capable of tolerating temperatures ranging from -40 to 212 degrees Fahrenheit. The spiders made of this rubber are suitable for cyclic loads as they offer 80 A Shore hardness, high dampening capacity & chemical resistance.
- Urethane: It has greater torque capability than Buna N (approx 1.5 times) and can withstand temperatures from -30 to 160 degrees Fahrenheit. However, it is not recommended for cyclic or start-stop applications.
- Hytrel: It is suitable for high-torque and high-temperature applications (-60 to 250 degrees Fahrenheit). It can accommodate 0.5 degree angular misalignment & 0.015 inch parallel misalignment.
- Bronze: Spiders having rigid, porous oil impregnated metal construction are exclusively designed for low-speed applications at temperatures ranging from -40 to 450 degrees Fahrenheit.
- Speed Limitations: Lovejoy L type spiders deliver maximum speed limitations of 1750 RPM for NBR and 3600 RPM for Urethane / Hytrel.
Frequently Asked Questions
What is the difference between open centre & solid centre Lovejoy spider designs?
The open centre design of Lovejoy spiders is suitable in close BE situations where units must be positioned as closely together as possible. However, this design has no full-diameter support as the spider's legs are joined only by a thin segment of material. It has speed limitations up to 1750 rpm for NBR and 3600 rpm for Urethane / Hytrel.
The solid centre design of Lovejoy spiders is suitable for general power transmission applications where the BE dimension will remain fairly constant and be capable of affording a suitable gap.
How do you install a spider coupling?
- Before installing hubs on a shaft, slide a retaining collar onto the shaft.
- Insert a key into the keyway. Make sure that the key fits snugly in the keyway, with minimal side to side movement.
- Slide a hub on the shaft (over the key) and align the face of the hub with the end of the shaft.
- Use a calibrated torque wrench to tighten the set screws.
- Check alignment using either straight edge method or a dial indicator, taking measurements at four locations, 90 degrees apart.
- Wrap the spider around the hubs and insert a leg of the spider into each space between the coupling jaws.
- Align the pins on the side of the collar with the grooves in the spider.
- Recheck set screws for tightness and recheck the axial & angular alignment for accuracy.
- Remove any material and tooling away from the coupling and shaft. Install the appropriate coupling guard as per OSHA requirements.
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