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Hook Type 5-20KN Rated Load MC Nylon Sheave Single Sheave Stringing Block for LGJ Conductor Stringing
Product Details:
| Place of Origin: | Ningbo, China |
| Brand Name: | Suntech |
| Certification: | ISO 9001 |
| Model Number: | SHDN-120*30 to SHDN-400*120 |
Payment & Shipping Terms:
| Minimum Order Quantity: | 1 SET |
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| Price: | Negotiable |
| Packaging Details: | Wooden case, 20-40 pieces per case by size, protected against movement in transit |
| Delivery Time: | 7-15 days |
| Payment Terms: | L/C,T/T |
| Supply Ability: | 1000 PCS per Month |
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Detail Information |
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| Product Type: | Single Sheave Stringing Block, Hook Hanger | Sheave Diameter Range: | 120mm - 250mm |
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| Sheave Width Range: | 30mm - 60mm | Rated Load: | 5 - 20 KN |
| Block Weight: | 1.5 - 4.6 KG | Sheave Material: | MC Nylon (aluminium Version Available) |
| Hanger Type: | Hook (plate Type Available) | Suitable Conductor: | LGJ 25 - LGJ 400 |
| Warranty: | 1 Year | ||
| Highlight: | Hook Type Stringing Block,5-20KN Rated Load Conductor Stringing Block,MC Nylon Sheave Single Sheave Stringing Block |
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Product Description
Hook Type Single Sheave Stringing Block for 10kV and 35kV Distribution Work
Distribution stringing is not a scaled down transmission job. Crews hang twenty to forty blocks in a morning, often from a bucket or a pole ladder, and the block has to go on and come off with one hand. This hook type single sheave block covers 5KN to 20KN on sheaves from 120mm to 250mm, weighs 1.5kg to 4.6kg, and takes LGJ 25 through LGJ 240 conductor. The hook open mouth clears a standard crossarm bolt, so no separate plate and no second spanner.
Model Code and Nylon Series Data
The model code reads outer sheave diameter x sheave width in millimetres, so SHDN-200*60 is a 200mm sheave with a 60mm wide groove. Nylon sheave versions of the six most used sizes:
| Item No. | Model | Suitable Conductor | Rated Load (kN) | Weight (kg) |
| 10191 | SHDN-120*30 | LGJ 25-70 | 5 | 1.5 |
| 10192 | SHDN-160*40 | LGJ 95-120 | 10 | 2.5 |
| 10193 | SHDN-200*40 | LGJ 150-240 | 15 | 3.6 |
| 10194 | SHDN-200*60 | LGJ 150-240 | 15 | 4.0 |
| 10195 | SHDN-250*40 | LGJ 150-240 | 20 | 4.0 |
| 10196 | SHDN-250*60 | LGJ 300-400 | 20 | 4.5 |
Aluminium sheave versions are available at the same sizes and carry the same rated loads; the nylon build is 0.4kg to 1.5kg lighter and does not mark aluminium strands. Larger sizes run to SHDN-400*120 at 20KN for LGJ 400-500.
Choosing Between Hook and Plate Hanger
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Hook type: fastest to hang on a bolt or a hook bracket, one hand operation, no loose parts. Use it where the block goes up and down repeatedly on the same structure.
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Plate type: bolts through the crossarm and stays put. Use it where a block remains in position for the whole pull, or where the hanger has to take a side load at an angle structure.
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Both are single sheave: splicing sleeves, steel wire rope and connectors pass through the groove, which matters when a joint has to run through the block during the pull.
Matching Sheave to Conductor
Do not choose by rated load alone. The sheave diameter sets the bend radius the conductor sees, so pick from the conductor range in the table and only then check the load figure against the pull per conductor. A 5KN block on LGJ 240 will hold the load but will bend the conductor tighter than the strand layer likes. Groove width should be a few millimetres wider than the conductor diameter, and the groove radius should sit on the conductor, not on the splice sleeve.
Field Checks Before Each Pull
Check that the hook throat is not worn, the keeper closes fully and the latch spring returns, the sheave spins freely with no grit in the bearing, and the groove has no burr from a previous splice. A block that has dropped on concrete usually shows a flat spot on the sheave rim, which will mark the conductor on the next pull.
Packing and Supply
Blocks are packed in wooden cases, 20 to 40 pieces per case depending on size, with the goods protected against movement in transit. Monthly capacity is around 1000 pieces, delivery 7 to 15 days, minimum order 1 set, and OEM marking and packing marks can follow the buyer drawing. Spare sheaves and keeper pins are supplied as service parts.
Frequently Asked Questions
Can one block take both hook and plate hanger? The hanger is fixed at build; order the version you need, or order both versions for a mixed fleet.
Is the nylon sheave replaceable? Yes, the sheave and bearing swap as a unit and are stocked as spares.
Which size suits ACSR 120mm2? SHDN-160*40 is the usual choice, rated 10KN for LGJ 95-120.
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