Pulley blocks

Pulley blocks - Gattegno

Running out blocks

Pulley block - Omac F144 & Omac F150

Single shave running out block for stringing overhead conductors. Aluminium sheave mounted on sealed bell bearings. Groove lined with nylon sectors. Openable galvanised steel frame with non-fleeting device. Standart swivelling fork attachment.

Special for OPGW : the running out block mod. F144.100.60 is properly designed for fiber optics conductors

Optional

301.2 Fix hook (code FT).

301.1 Swivelling hook attachement (code GG).

314 - Bottom groove lined with aluminium sactors (only for shaves with groove width E = 50, 60, 68 and 95mm).

327 - Non-fleeting device as big as half wheel circumference (standard on mod. F150).

326 - Ground device (opt.314 needed).

326.1 Ground device with contact on conductor through cascading rollers.

329 - Copper cable, 6-m long, with transparent PVC protection, with a clamp for tower and a terminal for the running out block (for opt.326 and 326.1).

328 - Special U-shaped frame.

320 - Box for transport and stocking.

Pulley blocks - OMAC - F144 - F150

 

 

 

Pulley block - Omac F145

Three-sheaves running out block fit for stringing two- three-bundled conductors. Aluminium sheaves mounted on sealed ball bearings. Grooves lined with nylon. Galvanised steel frame with non-fleeting devices on lateral sheaves. Demountable attachment revolving at 90°.

Optional

314 - Sheaves lined with aluminium sectors.

326 - Ground device (opt.314 needed).

326.1 Ground device with contact on conductor through cascading rollers.

329 - Copper cable, 6-m long, with transparent PVC protection, with a clamp for tower and a terminal for the running out block (for opt.326 and 326.1).

325 - Reinforced central sheave with breaking load 25.000 kN (for mod. F145.100.95 only).

330 - Central sheave with groove width 95 mm (for models F145.xx.68 e F149.xx.68).

Pulley blocks - OMAC - F145

 

 

 

Pulley block - Omac F149

Five-sheaves running out block fit for stringing four-bundled conductors. Aluminium sheaves mounted on sealed ball bearings. Grooves lined with nylon. Galvanised steel frame with non-fleeting devices on lateral sheaves. Demountable attachment revolving at 90°.

Optional

314 - Sheaves lined with aluminium sectors.

326 - Ground device (opt.314 needed).

326.1 Ground device with contact on conductor through cascading rollers.

329 - Copper cable, 6-m long, with transparent PVC protection, with a clamp for tower and a terminal for the running out block (for opt.326 and 326.1).

325 - Reinforced central sheave with breaking load 25.000 kN (for mod. F145.100.95 only).

330 - Central sheave with groove width 95 mm (for models F145.xx.68 e F149.xx.68).

Pulley blocks - OMAC - F149

 

 

 

Pulley block - Omac F188

Six-sheaves running out block for six-bundled conductors, fit for stringing 6 conductors by using 2 pilot ropes. Aluminium sheaves mounted on sealed ball bearings. Grooves lined with nylon. Steel frame with non-fleeting devices on lateral sheaves. Demountable attachment revolving at 90°.

Optional

314 - Sheaves lined with aluminium sectors.

325 - Central sheave lined with steelsectors.

326 - Ground device (opt.314 needed).

329 - Copper cable, 6-m long, with transparent PVC protection, with a clamp for tower and a terminal for the running out block (for opt.326 and 326.1).

Pulley blocks - OMAC - F188

 

 

 

Pulley block - Omac F189

Seven-sheaves running out block for four- or six-bundled conductors, fit for stringing 4 or 6 conductors by using 1 or 2 pilot ropes. Aluminium sheaves mounted on sealed ball bearings. Grooves lined with nylon. Steel frame with non-fleeting devices on lateral sheaves. Demountable attachment revolving at 90°.

Optional

314 - Sheaves lined with aluminium sectors.

325 - Central sheave lined with steelsectors.

326 - Ground device (opt.314 needed).

329 - Copper cable, 6-m long, with transparent PVC protection, with a clamp for tower and a terminal for the running out block (for opt.326 and 326.1).

Pulley blocks - OMAC - F189

 

 

 

Pulley block - Omac F144...E & F150...E

Single sheave block fits for stringing a pilot rope by helicopter. Proper devices allow to position the pulling rope in the sheave groove, and prevent it from slipping out. The sheave is made with cast aluminum alloy, and it is mounted on waterproof bearings. Groove lined with interchangeable nylon sectors. Galvanized steel frame. Fix fitting.

Optional

314 - Sheaves lined with aluminium sectors.

326 - Ground device (opt.314 needed).

327 - Non-fleeting device an half wheel circumference.

329 - Copper cable, 6-m long, with transparent PVC protection, with a clamp for tower and a terminal for the running out block (for opt.326 and 326.1).

Pulley blocks - OMAC - F144...E - F150...E

 

 

 

Pulley block - Omac F145...E

3-sheave block fits for stringing, by helicopter, the pilot rope. Proper devices allow to position the pulling rope in the sheave groove, and prevent it from slipping out. The sheave is made with cast aluminum alloy, and it is mounted on waterproof bearings. Groove lined with interchangeable nylon sectors. Galvanized steel frame. Fix fitting.

Optional

314 - Sheaves lined with aluminium sectors.

326 - Ground device (opt.314 needed).

329 - Copper cable, 6-m long, with transparent PVC protection, with a clamp for tower and a terminal for the running out block (for opt.326 and 326.1).

Pulley blocks - OMAC - F145

 

 

 

Pulley block - Omac F151.235

Counter-pull running-out block

  • Galvanised steel frame, openable, with swivelling hooks on the ends.
  • Automatic disengaging device for recovering the unit.
vers. AS Galvanised steel pulley mounted on ball bearings.
vers. BS Aluminium pulley lined with interchangeable nylon ring.
Pulley blocks - OMAC - F151.235

 

 

 

Pulley block - Omac F308.100.98

Rollers/pulley designed for stringing conductors up to diameter 60 mm. Made of electrowelded and galvanized steel. Nylon rollers turning on bearings. Flexible fittings. Breaking load: 18000 daN Bending ray: 1500 mm Rollers-groove width: 70 mm Dimensions: 1660 x 180 x 450 mm Weight: 35 kg

Optional

  • 01- Antifleeting framework made of nylon rollers, with openable upper roller.
  • 02- Groove width 100 mm.
Pulley blocks - OMAC - F308.100.98

 

 

 

Pulley block - Omac F151

Running out block fit for stringing shield wires. Galvanized steel sheave mounted on ball bearings. Galvanized steel frame with non-fleeting device.

Two different attachments available:
A - swivel hook.
B - swivel fork.
C - fix hook.
Blocks with different dimensions can be built on demand.

Pulley blocks - OMAC - F151

 

 

 

Pulley block - Omac F152

Snatch block. Steel sheave mounted on ball bearings. Galvanized steel frame with openable side.

Three different attachments available:
A - swivel hook (GG)
B - fix fork (FF)
C - fix eye (FO)

Blocks with different dimensions can be built on demand.

Pulley blocks - OMAC - F152

 

 

 

Snatch-blocks

Pulley block - Omac C 86.ST

Openable snatch block. Galvanised steel sheave mounted on ball bearings. Galvanised steel frame with openable side. Standard hook attachment.

On request: eye attachment A2

Pulley blocks - OMAC - C 86.ST

 

 

 

Pulley block - Omac C 86.AL

Openable snatch block. Aluminium sheave mounted on ball bearings. Aluminium frame with openable side. Standard hook attachment.

On request: eye attachment A2

Pulley blocks - OMAC - C 86.AL

 

 

 

Pulley block - Omac C86

Openable snatch block. Galvanized steel sheave mounted on ball bearings. Steel frame with openable side.

Also available mod. C86.A with nylon sheave.

Pulley blocks - OMAC - C86

 

 

 

Pulley block - Omac C89

Tackle block. Steel frame with shaped sides to prevent the rope fleeting. High resistance steel swivelling hook with safe device. Steel sheaves mounted on ball bearings.

C89.1 with 1 sheave and openable frame.
C89.2 with 2 sheaves.
C89.3 with 3 sheaves.

Pulley blocks - OMAC - C89

 

 

 

Pulley block - Omac C87

Snatch block for wire ropes. Galvanised steel frame with 2, 3 or 5 steel sheaves dia 160 and 180 mm mounted on waterproofed ball bearings. The snatch blocks are supplied in pairs.

Optional

  • Shackle, swivel joint and wire rope (length and diameter of the rope to be specified)
Pulley blocks - OMAC - C87

 

 

 

Pulley block - Omac C88

Tackle block for high voltage lines. Steel frame with 4 or 6 steel sheaves mounted on waterproofed ball bearings. Supplied in pairs.

Optional

  • Aluminium sheaves.
Pulley blocks - OMAC - C88

 

 

 

Running boards for bundle conductors

Pulley block - Omac F153

F153.2 Running board for 2-bundle conductor, fit for connecting the pulling rope to 2 conductors (phases). The running board is made up of :

  • 1 sheave with balancing counterweights
  • 1 swivel joint for the pulling rope
  • 2 swivel joints for the conductors
  • 1 length of antitwisting steel rope for the conductors

F153.3 Running board for 3-bundle conductors, fit for connecting the pulling rope to 3 conductors (phases). The running board is made up of :

  • 1 sheave with balancing counterweights
  • 1 swivel joint for the pulling rope
  • 3 swivel joints for the conductors
  • 2 lengths of antitwisting steel rope: 1 for the lateral conductors and 1 for the central conductor
Pulley blocks - OMAC - F153

 

 

 

Pulley block - Omac F154

Running board for 4-bundle conductors fit for connecting the pulling rope to 4 conductors (phases). The running board is made up of :

  • 3 sheaves with balancing counterweights
  • 1 swivel joint for the pulling rope
  • 4 swivel joints for the conductors
  • 2 lengths of antitwisting steel rope for the conductors
Pulley blocks - OMAC - F154

 

 

 

Pulley block - Omac F153...F

F153.2...F Fix-type running board for 2-bundle conductor, fit for connecting the pulling rope to 2 conductors (phases).
The running board is made up of :

  • 1 swivel joint for the pulling rope
  • 2 swivel joints for the conductors
  • 2 lengths of antitwisting steel rope for the conductors

F153.3...F Fix-type running board for 3-bundle conductors, fit for connecting the pulling rope to 3 conductors (phases).
The running board is made up of :

  • 1 swivel joint for the pulling rope
  • 3 swivel joints for the conductors
  • 3 lengths of antitwisting steel rope for the conductors
Pulley blocks - OMAC - F153...F

 

 

 

Pulley block - Omac F154...F

Fix-type running board for 4-bundle conductors fit for connecting the pulling rope to 4 conductors (phases).
The running board is made up of :

  • 1 swivel joint for the pulling rope
  • 4 swivel joints for the conductors
  • 4 lengths of antitwisting steel rope for the conductors
Pulley blocks - OMAC - F154...F

 

 

 

Stringing equipment

Pulley block - Omac F166

Joint protector made up of two galvanised steel shells. The ends are shaped to host the rubber protections. It is fit to contain the bending ray of the conductor during the passage in the running out blocks.

Note: in the purchase order, please specify the following dimension :
L = length of the joint after pressing
d = conductor diameter
ch = hexagon dimension of the joint after pressing

Pulley blocks - OMAC - F166

 

 

 

Pulley block - Omac F198

Antitwisting counterweight fit for stringing overhead fiber optics cables (OPGW). The counterweight allows to prevent the cable from twisting during the passage in the running out blocks. Its shape is designed for passing in the grooves of the running out blocks without damaging the cable. A pair of nylon liners prevent damages to the conductor. Supplied in metallic case.

Note: the counterweights F198 must always be used in pairs.

In the purchase order, please specify the conductor diameter.

Pulley blocks - OMAC - F198

 

 

 

Pulling robot for replacing conductors

Pulley blocks - OMAC - F405.10.B

Omac F405.10.B

Pulling robot made of light alloy. Moved by two electric motors that control two aluminium drive wheels lined with vulcolan. The motors are powered by an interchangeable and rechargeable battery. Device for unlocking and recovering the robot in case of stop while working. Radiocontrol for controlling the movement. The robot can ride any rope/conductor. The lower wheels allow it to overpass little obstacles, like conductor joints. Supplied in metallic box (1,00 x 0,60 x 0,90 m).

radio-control

Radiocontrol with forward/backward and stop control keys, max distance 400 m (the real capacity may be reduced in particular weather conditions). Complete with receiving unit, battery charger and 2 extractable and rechargeable batteries. Protection IP67.

Optional

  • Battery-charger for the battery of the motors, complete with 230 V trasformer.

 

 

 

Pulley blocks - OMAC - F405.15.S

Omac F405.15.S

Pulling robot made of light alloy. Moved by two electric motors that control two aluminium drive wheels lined with vulcolan. The motors are powered by an electric power unit with gasoline engine transported by the robot itself. Device for unlocking and recovering the robot in case of stop while working. Radiocontrol for controlling the movement. The robot can ride any rope/conductor. The lower wheels allow it to overpass little obstacles, like conductor joints. Supplied in metallic box (1,00 x 0,60 x 0,90 m).

Radio-control

Radiocontrol with forward/backward and stop control keys, max distance 400 m (the real capacity may be reduced in particular weather conditions). Complete with receiving unit, battery charger and 2 extractable and rechargeable batteries. Protection IP67.

 

 

 

Equipments for replacing conductors

Pulley blocks - OMAC - F183-2-70Cradle block designed for replacing the existing ground wire (GW) with optical grounding wire (OPGW) cables. It’s made of two galvanized steel half-frames linked by a ring with swivel plate. Each half-frame is complete with :
one grooved nylon wheel mounted on ball bearings
three nylon plates to protect the OPGW cable
easy-to-open side

The frame is designed to avoid the contact between cable and metallic parts.

Performances and characteristics

Working load : 2 kN
Breaking load : 10 kN
Wheel diameter (external) : 70 mm Wheel diameter(bottom groove) : 40 mm
Groove width : 40 mm
Dimensions (AxBxC) : 400 x 120 x 70 mm
Weight : 1,95 kg

 

 

 

Pulley block - Omac F183.3.70

Cradle block for replacing existing cables, with head clamp for ropes diameter from 10 to 20 mm. Nylon main wheel mounted on ball-bearings, second wheel and aluminium frame with protective nylon.
Working load : 200 daN
Breaking load : 1000 daN
Weight : 1,2 kg

Pulley blocks - OMAC - F183-3-70

 

 

 

Omac F405.15.FR

Braking device for cradle blocks. Positioned behind the sequence of cradles, it aids to keeps the distance between the cradles.
Aluminium frame and aluminium and rubber wheels mounted on ball-bearings.
Working load: 150 daN
Weight: 4 kg

Pulley blocks - OMAC - F405.15.FR

 

 

 

Omac F405.15.RR

Recovering device to hook the robot in case of particularly conditions of extreme inclination. Towing system by rope with extractable counterweights.
Aluminium frame and wheels mounted on ball bearings and galvanised steel counterweights.
Working load: 150 daN.
Weight: 8,3 kg (counterweights excluded)
Counterweights: 3 x 8,8 kg each

Pulley blocks - OMAC - F405.15.RR

 

 

 

Usage of the pulling robot for replacing conductors

1. Step I: the cradle blocks are positioned on the existing GW cable by means of a guide rope pulled by traction robot OMAC F405. A pulling rope passes in the lower wheels of the cradle blocks.
2. Situation at the end of the step I
3. Step II: the new OPGW cable replaces the pulling rope
4. Situation at the end of the step II
5. Step III: the cradle blocks rotate upside down and the old GW cable is replaced by the OPGW cable
6. Step IV: the pulling rope replaces the old GW cable
7. Step V: the cradle blocks are recovered

Usage of a pulling robot