822mm Sheave Diameter MC Nylon Sheave Conductor Stringing Block with 150KN Rated Load for EHV Reconductoring

822 Series High Tension Stringing Block for EHV Construction

The 822 series sits between the 660 and the largest blocks in the range, with an 822mm sheave and up to nine sheaves at 150KN. It is aimed at EHV construction and at reconductoring work where existing lines are upgraded to larger conductors without changing the tower geometry.

Design Features and Field Benefits

• 150KN Capacity for Heavy Reconductoring: The nine sheave SHJ822 is rated 150KN, enough for large conductor pulls on EHV upgrades where tension per conductor is high.
• MC Nylon Sheave Reduces Friction and Marking: MC nylon has a low coefficient of friction and a smooth surface, so it protects conductor finishes while keeping pulling effort down.
• Sealed Bearings for Long Pulls: Sealed bearings retain grease and exclude grit, which keeps rolling resistance stable across multi-kilometre pulls.
• OPGW Compatible Configurations: Rubber lined aluminium and MC nylon sheaves are both suitable for optical ground wire where surface pressure must be controlled.

822 series configurations

Dimensions and ratings are nominal. Confirm the exact model against the datasheet before ordering.

Product Overview

MC nylon sheaves are the standard choice for conductor contact because they are light, smooth and non-marking; cast steel is used in the centre position on bundle blocks where radial load is highest. Frames up to nine sheaves use oversized axles and reinforced side plates, and every assembly is checked for sheave alignment before shipment.

Typical Applications

• EHV transmission line construction
• Conductor upgrading and reconductoring
• OPGW installation
• Long span and heavy tension pulls

Selection Guidance

• Choose sheave count from the bundle configuration, not from the load alone.
• For OPGW, specify rubber lined aluminium or MC nylon and confirm the groove radius.
• Check tower and rigging capacity together with block weight, which reaches 445KG on the nine sheave version.

Quality Control and Delivery

Units are assembled in an ISO 9001 certified workshop. Frames are checked for sheave alignment and axle straightness, load bearing parts are inspected before assembly, and finished units are function checked before packing. Export packing is a plywood case with a moisture barrier, and a 12 month warranty covers manufacturing defects. Inspection records and, on request, third party load test certificates can be supplied with the shipment.

Frequently Asked Questions

For project specific configurations, drawings or inspection requirements, send the conductor size, rated load and destination port with your enquiry.