Aerial Roller / Pulley Block
Running out block and stringing block for stringing overhead conductors
Aerial roller, or pulley block, is made up of single or more sheaves and steel frame. The material of sheave is generally nylon or aluminum alloy, and the steel frame is galvanized or covered with coatings. Our stringing blocks are available with single sheave, three sheaves and five sheaves to fit for stringing single conductor, two or up to five bundled conductor lines. The central wheel of the pulley block can be made of cast steel to lessen the sliding abrasion wear brought on by the wire rope passing through the central wheel, therefore increasing the reliability of the stringing block in extreme cold or hot weather conditions.
These stringing blocks are provided with single sheave, three sheaves and five sheaves, which are used for single conductor, two or three bundled conductor, and four or five bundled conductor.
After being hung on the power tower, the stringing block allows anti-twisting wire rope and other tools to draw the conductors toward the power tower through the wheel groove of the stringing block.
Single Nylon Sheave Aerial Roller
| Model | Max. Applicable Rope Diameter ( mm ) | Dimensions (mm) F/E/B/C/A | SWL/BL/PL (kN) | MASS (kg) | ||
| ACSR/ AAAC/ACAR, etc. | OPGW | GSW/ACS, Earth Wire | ||||
| 25.20 | n/a | 16.0 | 270 /200/60/42/70 | 20 / 50 / 30 | 6 | |
| 26.91 | 8.5 | 17.0 | 320 /240/80/62/90 | 20 / 50 / 30 | 8 - 10 | |
| 28.00 | 11.5 | 18.0 | 400 /314/80/62 /90 | 20 / 55 / 30 | 12 - 14 | |
| 29.14 | 12.5 | 20.0 | 440 /350/80/62 /90 | 20 / 60 / 30 | 14 - 16 | |
| 30.96 | 14.0 | n/a | 508/408/100/78/110 | 20 / 60 / 30 | 21 - 23 | |
| 32.00 | 18.0 | n/a | 660/560/100/78/114 | 20 / 60 / 30 | 28 - 33 | |
| 35.60 | 19.0 | n/a | 750/640/110/88/126 | 30 / 90 / 45 | 36 - 41 | |
| 36.23 | 20.0 | n/a | 800/693/115/92/131 | 33 / 99 / 50 | 42 - 46 | |
| 38.40 | 21.0 | n/a | 822/710/110/88/126 | 40 / 120 / 60 | 45 - 50 | |
| 42.00 | 22.0 | n/a | 916/800/110/88/126 | 45 / 135 / 68 | 50 - 55 | |
| 42.00 | 22.0 | n/a | 916/800/120/97/136 | 50 / 150 / 75 | 53 - 58 | |
| 45.00 | 24.0 | n/a | 1040/900/125/104/145 | 50 / 150 / 75 | 60 - 65 | |
Three Nylon Sheave Aerial Roller
| Model | Dimensions ( mm ) | SWL/ B.L./P.L. (kN) | Mass (kg) | ||||||||||
| A1 | A | B1 | B | d | D | S | E | H | L | G | |||
| 78 | 100 | 78 | 100 | 408 | 508 | 104 | 322 | 200 | 888 | 23 | 40 / 120 / 60 | 52 | |
| 78 | 100 | 78 | 100 | 560 | 660 | 104 | 324 | 210 | 1090 | 23 | 50 / 150 / 75 | 76 | |
| 88 | 110 | 88 | 110 | 560 | 660 | 114 | 354 | 210 | 1090 | 23 | 50 / 150 / 75 | 83 | |
| 88 | 110 | 88 | 110 | 640 | 750 | 114 | 354 | 250 | 1225 | 25 | 60 / 180 / 90 | 93 | |
| 93 | 115 | 93 | 115 | 693 | 800 | 120 | 366 | 250 | 1280 | 25 | 65 / 195 / 98 | 102 | |
| 88 | 110 | 88 | 110 | 710 | 822 | 115 | 356 | 250 | 1302 | 25 | 70 / 220 / 105 | 115 | |
| 98 | 120 | 98 | 120 | 710 | 822 | 125 | 386 | 260 | 1336 | 30 | 75 / 225 / 113 | 122 | |
| 98 | 110 | 98 | 110 | 800 | 916 | 115 | 356 | 270 | 1446 | 30 | 75 / 225 / 113 | 123 | |
| 98 | 120 | 98 | 120 | 800 | 916 | 125 | 386 | 270 | 1440 | 30 | 80 / 240 / 120 | 128 | |
Note:
The suspension fittings of pulley block can be configured as per your request.
Five Sheave Aerial Roller
| Model | Dimensions ( mm ) | SWL/ B.L. /P.L. (kN) | Mass (kg) | ||||||||||
| A1 | A | B1 | B | d | D | S | K | H | L | E | |||
| 78 | 100 | 78 | 100 | 408 | 508 | 104/ | 208 | 200 | 908 | 530 | 50 / 150 / 75 | 75 | |
| 78 | 100 | 78 | 100 | 560 | 660 | 104/ | 208 | 215 | 1110 | 532 | 60 / 180 / 90 | 112/140 | |
| 88 | 110 | 88 | 110 | 560 | 660 | 114 | 228 | 215 | 1110 | 582 | 60 / 180 / 90 | 121/153 | |
| 98 | 120 | 88 | 110 | 560 | 660 | 124 | 238 | 215 | 1110 | 622 | 65 / 195 / 97 | 128/160 | |
| 88 | 110 | 88 | 110 | 640 | 750 | 114 | 228 | 260 | 1275 | 582 | 70 / 210 / 105 | 145 | |
| 94 | 115 | 92 | 112 | 693 | 800 | 119 | 235 | 270 | 1310 | 602 | 100 / 280 / 150 | 170/210 | |
| 88 | 110 | 88 | 110 | 710 | 822 | 115 | 230 | 270 | 1322 | 586 | 100 / 280 / 150 | 175/220 | |
| 98 | 120 | 98 | 120 | 710 | 822 | 125 | 250 | 270 | 1322 | 636 | 110 / 308 / 165 | 182 | |
| 88 | 110 | 88 | 110 | 800 | 916 | 115 | 230 | 270 | 1426 | 586 | 120 / 336 / 180 | 200/250 | |
| 98 | 120 | 98 | 120 | 800 | 916 | 125 | 250 | 270 | 1426 | 636 | 130 / 365 / 195 | 220/270 | |
| 104 | 125 | 104 | 125 | 900 | 1040 | 130 | 260 | 300 | 1580 | 665 | 150 / 420 / 225 | 270/340 | |
- The model suffix "N" means that the five sheaves of the stringing block are all made from nylon. The model suffix "S" means that the central wheel of the stringing block is made from steel, and other four sheaves are made from nylon.
- The suspension fittings of pulley block can be configured as per your request.
