![Barton Marine Series 4 Single Upright Block- 54mm [N04 150]](https://cdn11.bigcommerce.com/s-2vfwgyus8b/images/stencil/1280x1280/products/75306/128906/82879XL__79445.1744671032.jpg?c=1 "Barton Marine Series 4 Single Upright Block- 54mm [N04 150]")
![Barton Marine Series 4 Single Upright Block- 54mm [N04 150]](https://cdn11.bigcommerce.com/s-2vfwgyus8b/images/stencil/500x659/products/75306/128906/82879XL__79445.1744671032.jpg?c=1 "Barton Marine Series 4 Single Upright Block- 54mm [N04 150]")
Series 4 Single Upright Block- 54mm
Plain Bearing Blocks
Barton plain bearing blocks have a precision moulded acetal sheave running on a large diameter brass bearing, ensuring free running under the highest of loads.
Specifications:
- Sheave size: 54mm x 17mm
- Max rope diameter: 12mm
- Safe working load: 750kg / 1650lbs
- Breaking load: 1500kg / 3300lbs
- Length: 92mm
- Weight: 218g
- MPN:
- N04 150
![Barton Marine Size 2 Single Upright Block [N02150]](https://cdn11.bigcommerce.com/s-2vfwgyus8b/images/stencil/500x659/products/67530/116048/99144XL__10185.1681843486.jpg?c=1 "Barton Marine Size 2 Single Upright Block [N02150]")
![Barton Marine Series 5 Fiddle Swivel Block - 54mm [N05 430]](https://cdn11.bigcommerce.com/s-2vfwgyus8b/images/stencil/500x659/products/54369/96445/82887XL__25890.1642124987.jpg?c=1 "Barton Marine Series 5 Fiddle Swivel Block - 54mm [N05 430]")
![Barton Marine Series 5 Fiddle Reverse Shackle Block - 54mm [N05 420]](https://cdn11.bigcommerce.com/s-2vfwgyus8b/images/stencil/500x659/products/54366/96442/82883XL__60873.1642124981.jpg?c=1 "Barton Marine Series 5 Fiddle Reverse Shackle Block - 54mm [N05 420]")
![Barton Marine Series 5 Fiddle, Swivel, Becket, and Cam Block - 54mm [N05 631]](https://cdn11.bigcommerce.com/s-2vfwgyus8b/images/stencil/500x659/products/54367/96443/82884XL__40270.1642124983.jpg?c=1 "Barton Marine Series 5 Fiddle, Swivel, Becket, and Cam Block - 54mm [N05 631]")