Stringing Blocks & Adapters
XS-100-B Single Sheave Stringing Block

The XS-100-B can be used in suspension utilizing a high strength hot dipped galvanized socket connector or used on crossarms. A 100% positive locking spring loaded head pin assembly has a large loop for hot stick operation. Anti-friction ball bearings in the sheave are lubricated for the life of the block under normal conditions.

Neoprene and urethane linings are available, as well as a polished groove aluminum, ductile iron, nylatron, and flat groove sheave assembly.

Maximum working load is 2,500 lb, maximum conductor O.D. is 1.75”, and weight is 9.25 lb.

XS-200-B Two Sheave Stringing Block

The XS-200-B has two sheaves that are the same as used in the XS-100- B. The block is for uplift conditions and can be used either in suspension or on a crossarm.

The side gate positively locks with spring plunger.

Maximum working load is 2,500 lb and weight is 16.25 lb.

Model 1210 Adapter
Model 1210 Adapter can be used to suspend blocks from a Messenger Cable
Additional Fittings Available
N3306Y "Noose"

The N3306Y “Noose” consists of a 1” nylon safety orange webbing made integral with a drop-forged steel ball eye fiting. It is designed to replace rope type slings.

Ideal for use with the XS-100-B Universal Block on armless construction and is also adaptable to other types of construction. The ball eye will fit all S&R blocks equipped with a socket connector.

Maximum working load is 2,500 lb weight is 3/4 lb.

B-747 Suspension Bracket

The B-747 is a lightweight, high-strength suspension bracket. The Y-ball clevis forms universal connection for all blocks with socket connector fittings. The fitting enables the block to be self-aligning on corners.

The bracket can be mounted at an angle with line of pull so that the cable is held close to the pole. Quickly and easily attached to the pole with a chain, its self-tightening angled groove eliminates the need for bolts or tools. Weight is 10 lb.

97 Series for Overhead Cables

The 97 series is extremely versatile for stringing overhead cables. Frame and sheave are light weight aluminum alloy and can be mounted directly to the pole or suspended from the messenger. It can also be used with the B-747 pole mounting bracket.

Maximum working load in suspension is 5,000 lb, maximum O.D. conductor is 4” and weight of block is 16 lb.

Model 4841 All Purpose Snatch Block

The Model 4841 all purpose snatch block has wide groove sheaves for ropes up to 1.25” in diameter. The frame is made of aluminum-magnesium alloy, fitted with a ductile iron sheave and a forged steel safety hook. All ferrous parts, except bearing surfaces, are hot dip galvanized. The all purpose snatch block is the finest general purpose side opening block ever built. The sheave has a complete 360 degree guard built into the frame. Wide upper frame makes block self-aligning when used in other than vertical position. This feature makes it ideal for lead off or haul back applications.

This block is for all types of rope, including wire rope. Maximum working load is 3 tons, maximum rope diameter is 1.25 in and weight is 18.5 lb.

GTA-358 and HLB-472 Ground To Air Blocks

The GTA-358 and the HLB-472 ground to air blocks are ideal for handline purposes. Constructed of lightweight, high strength aluminum alloy for maximum strength at minimum weight. Because sheaves are mounted on ball bearing for minimum friction and are recessed within the frame, these blocks are ideal for use with synthetic ropes. The HLB-472 model is available in standard or “open side.”

When ordering, specify fitting, swivel eye, safety hook and swivel eye, or open hook and swivel eye. The GTA-358 maximum working load is 2,000 lb, rope size is 3/8” - 5/8”, and weight is 2 lb.

The HLB-472 maximum working load is 1,250 lb, rope size is 3/8” - 5/8”, and weight is 1 lb, 6 oz.


GTA-358

HLB-472
NBPB-1 High-Strength Pole Mount Bracket

The NBPB-1 is a high-strength pole mounted bracket with 360 degrees of block articulation. The universal connection can be used with all blocks with standard socket connector fittings. The bracket enables the attached block to be self-aligning on corners and angles.

This bracket can be mounted to the pole with either lag bolts or chain. Weight is approximately 4 lb.

QBNB-65, Muti-Sheave Quadrant Block
The Model No. QBNB-65, Muti-Sheave Quadrant Block protects cable during installation. With a maximum pulling radius of 40” and a maximum 3” o.d. cable diameter. The block consists of six 5” o.d. x 4 ½ “ w., Nylatron sheaves that increase durability with less weight, on sealed ball bearings that allow the cable to make gradual 90° turns for easy pulling with less stress, through manhole and handhole openings. Three hinged aluminum retaining rollers on oil impregnated bronze bushings with spring locking pins keep the cable contained within the frame. The Block can be suspended or anchored for many cable installation requirements. Anchors are positioned to allow for alignment of each cable pull. Aluminum side plates with flared edges provide lightweight and corro-sion resistant construction for extended life.
Specifications
Model No. Sheave Size No. Sheaves Max. Cable O.D. Max. W.L.
QBNB-65 5”x4 ½ “ 6 3” 2,500 lb

Overall Block Dimensions (approximate): 40 in. x 10 in. x 15 in., weight is 70 lb
* Consult cable manufactures for minimum bend radius

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