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Custom Blocks
Engineered for defined rope paths, load requirements, mounting constraints, and service environments. Single and and multi-sheave designs supported. In addition to the options listed below, features such as greaseable shafts are commonly supported. Configurations beyond those shown can be reviewed based on operating conditions and performance criteria.
Style
Style
- Single or Double Shackle
- Swivel
- Pivot (articulating/hinged)
- Snatch (side-opening)
- Vertical Mounted
- Horizontal Mounted
Materials
Materials
- C1045 Medium-Carbon Steel
- 304 Stainless Steel
- 316 Stainless Steel
- 5083 Aluminum
- 6061 Aluminum
- 7075 Aluminum
- Nylon (MoS₂-Filled)
- Delrin (Acetal)
Bore Options
Bore Options
- Oil-Embedded Bronze Bushing
- Lubrite Bronze Bushing
- Ball Bearing
- Stainless Steel Ball Bearing
- Sealed Needle Roller Bearing
- Tapered Needle Roller Bearing
Finishes
Finishes
- Flame Hardened
- Anodized
- Powder Coated
- Zinc Plated
- Hot-Dip Galvanized
- Epoxy Coated
- Machined Finish
For quotation, specify application and requirements or submit drawings to sales@torkwinch.com
Recent Projects
Sheaves finished with an enamel paint and mounted on Dodge pillow block units with tapered roller bearings at each end of the shaft, increasing dynamic load rating by distributing load across two support points instead of a single hub-mounted bearing. Bearings are greaseable, and the shaft is cryogenically shrunk during assembly allowing it to be press-fit into sheave.
Double sheave/single shackle and single sheave/double shackle block configurations engineered for flood gate management systems. Featuring stainless steel sheaves paired with a galvanized housing for long-term corrosion resistance, LUBRITE bronze bushings for smooth, low-friction operation, and greaseable shafts to enable routine lubrication and extended service life with minimal maintenance.
Triple sheave blocks engineered for hydroelectric dam gate application. Utilizing LUBRITE bushings for smooth, wear-resistant operation, an epoxy coating for corrosion protection, and stainless steel pins for enhanced durability and reduced maintenance.
Custom solution for flood management gate systems operating in Florida’s harsh marine environment. The blocks were rated for 10–20 ton loads and supplied in single and double shackle configurations, with single and double sheave configurations for 5/8″ and 3/4″ rope. All components were galvanized to provide long-term corrosion resistance in saltwater conditions.
These blocks were engineered with a 30:1 D:d ratio to reduce bending stress and strand fatigue during repeated cycling. Increased pitch diameter improves load distribution across the rope, supporting long-term wire rope integrity in critical overhead applications. Supplied in a shackle-mounted configuration and finished in black powder coat for durability and low-visibility installation.
Single sheave shackle blocks fabricated with 316 stainless steel side plates and sheave for operation in marine and saltwater environments. A swing open cheek design allows the block to be installed directly onto an existing wire rope, eliminating the need to reeve the full line during installation or maintenance.
Stainless steel swivel blocks equipped with a greaseable swivel mechanism to allow alignment with the direction of load during operation. The assembly was provided with multiple grease ports to allow connection of remote lubrication lines, enabling routine bearing maintenance without disassembly or direct access.