# MasterDrive 3LK420 LK Series Jaw Coupling Spider Insert - MROSupply.com

***MasterDrive 3LK420 LK Series jaw coupling spider insert. Flexible elastomeric element designed to accommodate angular, parallel, and axial misalignment while dampening torsional vibration in industrial power transmission systems. Durable construction ensures reliable torque transfer and extended service life in pump, compressor, and conveyor applications.***



## Product details:

- Catalog number: 3LK420
- SKU: 2336010
- Price: ***$18.83*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [MasterDrive](https://www.mrosupply.com/brands/masterdrive/)
- Category: 
    - [3L Section](htts://www.mrosupply.com/v-belts/standard-v-belts/3l-section/)
    - [Standard V-Belts](htts://www.mrosupply.com/v-belts/standard-v-belts/)
    - [V-Belts](htts://www.mrosupply.com/v-belts/)
- Unit of measure: each
- Technicall support: contact supplier for technical support on 888-922-8767


## Product images:
- https://static.mrosupply.com/images/noimage.webp


## Product attributes;

  
- Bore Type: QD Bushed
  

  
- Bushing Size: J
  

  
- Bushing Type: QD
  

  
- Finish/Coating: Grey Painted Protective Coating
  

  
- k in: 1.437 in
  

  
- Length Through Bore: 4.625 in
  

  
- OD: 21.2 in
  

  
- Series: 8V QD Sheaves
  

  
- Sheave Construction: Spoked
  

  
- Sheave/Pulley Type: A-3
  

  
- Type: QD Style Heavy Duty V-Belt Sheaves
  

## Alternate products to `MasterDrive 3LK420 LK Series Jaw Coupling Spider Insert - MROSupply.com`:
- [Gates 84236742 3L420K PoweRated V-belt with 3L section, 42" outside length, and aramid tensile cord. Designed for lawn-and-garden and light-duty industrial drives requiring reinforced strength. Fiber-loaded EPDM compound resists oil, heat, and flex fatigue for extended service life.](https://www.mrosupply.com/products/1245816/as-markdown/)

## Product's reviews:
- Masterdrive products - USED SEVERAL F-A QD WELD ON HUBS WITH ZERO PROBLEMS-USED LOTS OF INNER QD HUBS WITH ZERO PROBLEMS ALSO, CHEAP & HIGH QUALITY.
- My mistake? fixed! - I needed a 3L330 V-Belt and somehow I think either I typed 5L330 although I was using an online conversion chart to match up belt numbers which might have had a typo there. The delivery is always good from MRO. I contacted MRO by email late that night after work with my silly situation and then rather than wait for a reply I ordered the right belt number so I could get the job done. I got a reply the next morning with instructions for the return procedure then the very next day I had the right belt delivered. Then I received another two contacts from the returns agent and customer support agent both telling me not to return the wrong belt and I would be refunded the purchase amount. Outstanding helpful support and the 'fastest delivery in the west'. MRO people are the best all around. Great products and extensive choices. I am retired now after 50 years in manufacturing equipment operations and maintenance with Nashua then Kellogg's but still I love working on machines and fixing things. MRO is a great source for many things even as small as a lawn & garden V-Belt they take care of the little guy too. Great people at MRO Supply.
- Great deal - Very good customer service, great prices and super fast shipping!!! Will buy again!!
- Masterdrive purchase - service and shipment was great