Fiber Optic Cable Blowing Machine Title  
about us
where to buy
news at GMP
contact us
Designed to be safe, fast and effective, even on tough terrain, the "Tornado" cable blowing machine will move fiber optic cable of 0.23 to 1.25 in. (5.84-32 mm) diameter at speeds to 300 ft./min. (90 m/min.) into pre-installed innerduct or direct-buried duct. It can accommodate innerduct from .47 to 2.48 in. (12-63 mm). A conversion kit allows the Tornado to place 12.7/10mm, 12/10mm or 10/8mm micro duct into the innerduct.

Comprised of an aluminum air box and cable pusher, the "Tornado" uses compressed air to install the cable with or without a missile. In operation, the hydraulically powered, caterpillar belt drive system controls the fiber optic cable as it is propelled by compressed air into the duct. An electronic monitoring system provides read-outs of speed and distance, protects cable against duct obstructions, and includes an emergency stop facility.

The air box and cable pusher are mounted on a lightweight, tubular-steel frame that can be tilted at a 30-degree angle to the manhole, which minimizes significantly any bending of the innerduct and cable. The frame has height adjustment to permit ease of maneuverability, and adjustable rear legs that provide added stability on uneven terrain. 89000 without tubular frame
can also be used without the frame, directly from its skid

Single Length Cable Blowing
Mid-Point Cable Blowin With Fleeter
PDF of above Cable Blowing Scenarios

The Junction Box Adapter is a necessary accessory for overriding existing cable in an occupied duct (space permitting). One branch attaches to the Tornado for placing the new cable or micro ducts, while the other branch seals off and holds the existing cable in the duct.

Power Pack with Oil Coolerpower pack with intigrated cooler
  • 4 gpm @ 1500 psi
  • Integrated oil cooler for extended operation in high environmental temperatures.
  • Unique suction circuit eliminates pulsation damage
  • Swing open frame provides excellent maintenance access to engine and hydraulics

P/N 32800
Weight: 145 lbs. (66 kg)Tornado Accessory Tool Kit

Included with the Tornado is a convenient toolbox with all the tools needed for use and maintenance of your blower.

All relevant parts and components of the cable blowing machine and the hydraulic power pack are specially treated to resist corrosion.

Recommended Compressor

This reliable & efficient rotary screw compressor, powered by a diesel engine, provides a maximum working pressure of 175 psi. The air output is filtered & conditioned to optimize the performance of our Tornado Fiber Blower. The maximum free air delivery is 370 cubic feet/minute. The unit is mounted on a two wheeled trailer with brakes and an adjustable towbar. Compressor Aftercooler also available.

The blower is supplied with a 4 lug Chicago fitting.

Heavy duty steel hub wheels available p/n 34471

Tornado Compressor - GMP #89015
Tornado Compressor - GMP #89015

accessory case

Optional Accessory Case
Heavy duty waterproof case for storing a variety of accessory items. The case will store 5 complete sets of the cable collets/guides/seals/seal plugs and 3 complete sets of the duct clamps/seals. One set of cable collets/guides and one set of duct clamps/seals are mounted in the Tornado. Size: 24.6 (625mm) x 19.7 (500mm) x 8.6 (218mm)
P/N 89840


Suggested Air Compressor Specifications
0 - 1 in.
(0 - 25.4 mm)
(4 m3/min.)
(12 bar)
1.02 - 1.18 in.
(25.9 - 29.9 mm)
(5 m3/min.)
(12 bar)
1.22 - 1.38 in.
(30.9 - 35 mm)
(7 m3/min.)
(12 bar)
1.48 - 1.57 in.
(37.5 - 39.8 mm)
(10 m3/min.)
(12 bar)
1.61 - 1.73 in.
(40.8 - 43.9 mm)
(13 m3/min.)
(12 bar)
1.75 - 1.96 in.
(44 - 50 mm)
(20 m3/min)
(12 bar)
NOTE: Referenced pressure and flows above maximize machine's performance.

How to configure your Tornado Cable Blowing Machine

Ordering Information
P/N Description Package
89000 "Tornado" Cable Blowing Machine (202 lbs.)
w/ Hydraulic Power Pack (154 lbs.)
356 lbs.
(162 kgs)
89003 "Tornado" Cable Blowing Machine (202 lbs.)
(without Power Pack)
202 lbs.
(92 kgs)
89008 Junction Box Adapter 57 lbs.
(26 kgs)
89015 Tornado Compressor 4152 lbs.
(1883 kgs)
89009 Compressor Aftercooler 163 lbs.
(74 kgs)
Click on image above for a larger view of the Tornado

Tornado Operation and Maintenance Manual (Current)

Tornado Operation and Maintenance Manual (Previous)

Current Tornado Hydraulic Power Pack Horizontal Style with oil cooler - Manual

Tornado Hydraulic Power Pack Horizontal Style Manual

Tornado Hydraulic Power Pack Vertical Style - Manual

How to configure your Tornado Cable Blowing Machine for Cable Blowing

Cable Seal ID Chart

How to configure your Tornado Cable Blowing Machine for Micro Duct Blowing

Download High Res Photo

Air Glide Duct Lube

For best results, Polywater Duct Pre Lube
More Info

Tornado Chain Lubricant-
This is the only chain lubricant that we recommend for lubricating the drive chain in the Tornado.
P/N 89153

SDR Single Size Overblowing Junction Boxes - The GMP 1 1/4" , 1 1/2" and 2" SDR Cable Overblowing Junction Boxes have been designed to install a new cable or innerduct into an existing occupied innerduct (subject to space being available)

P/N 89066 1 1/4"SDR

P/N 89067 1 1/2" SDR

P/N 89068 2" SDR

Universal Overblowing Junction Box- The GMP Cable Overblowing Junction Box has been designed to install a new cable or microducts into an existing occupied sub-duct.
P/N 89008

air hose
Accessory Air Hose
Complete with blow gun and Chicago fitting for direct connection to compressor.

P/N 89422

Sonde Missile
sonde missile
The sonde missile safely carries the Sonde P/N 88283 through a duct with compressed air in order to test the integrity of a duct or precisely locate a blockage.
Sonde sold separately.

Find more about sondes here.

bottom bar  
dot dot dot dot dot dot
General Machine Products Co. 3111 Old Lincoln Highway Trevose, PA 19053 USALOGO
Tel: +1.215.357.5500 Fax: +1.215.357.6216 Email:
© 2011 General Machine Products Co., Inc