Click Here For Mole Operation User Guide (.pdf)
With a comprehensive range of over 20 machine sizes from 50mm – 200mm OD Hammerhead moles offer long life, quality, performance and reliability as standard.
New to the Hammerhead range are the Catamount™ 67mm, 75mm & 111mm moles featuring a new concept in reciprocating head technology which makes them the world easiest starting piercing tool.
Hammerhead moles feature: -
A patented clamped rear anvil that allows easy field maintenance with no requirement for special tools, solvent cleaners or adhesives
Heaviest one-piece strikers in the industry giving high impact performance
Replaceable internal wear rings that eliminate metal to metal contact decreasing wear and offering a sustainable level of performance across the lifetime of the tool
A proven range of reverse mechanisms including ¼ turn Power Port ® , multi turn screw and air reverse systems
Active head and standard fixed head variants to cover a wide range of ground conditions.
Range & Specs
Click Here For Hammerhead Mole Information (.pdf)
The right tool size for the job: -
With more than 20 models ranging from 50 to 200 mm (2" – 8"), U Mole have a Hammerhead piercing tool to meet your needs and any ground condition.
When selecting a mole for the installation of pipes ducts and cables two basic rules apply: -
Size of mole: -
The outside diameter of the mole to be utilised should be at least 10% larger than the OD of the pipe, duct or cable being installed. This is to accommodate the shrinkage in the bore once the mole has passed through the ground.
In practical terms this means that a 50mm OD mole is suitable for installing pipes, ducts and cables up to 45mm OD, and a 200mm mole is suitable for pipes, ducts and cables up to 180mm OD
Depth of cover: -
When using a mole, to ensure that it does not rise to the surface during operation, the minimum depth of cover equating to 10 x the diameter of the tool is required.
In practical terms this means that a 50mm OD tool should be used at a minimum depth of cover of 0.5mtr and a 130mm OD tool at 1.3mtr depth.
This is a general rule of thumb and the type of ground cover above the tool may dictate it can be used shallower.
Ancillary
Click Here For Safety Over Boot Information (.pdf)
Click Here For Shoring Cradle Information (.pdf)
Hammerhead Mole® pneumatic piercing tools supplied by U Mole are operated in many different locations and ground conditions and to help operators complete more successful bores a range of labour saving and safety related products are available as standard.
This range of equipment includes: -
- Launch cradles and pin-less shoring systems for increased bore accuracy
- Dielectric boots and gloves for increased operator safety
- Front and rear pipe pulling accessories for restricted access locations and unstable ground conditions
- Slip on front expanders for completion of larger bores with smaller moles
Parts & Maintenance
Hammerhead® piercing tools come with a parts and service support via U Mole that is second to none.
Our factory trained personal can support your service issues weather they are in the field, on the phone or in your office. With an extensive knowledge of moling based on nearly 25 years of company experience in the rental and sale of equipment within the UK market place U Mole have the skills to help you no matter where you are working in the UK and Ireland.
If you need parts U Mole hold a comprehensive stock for immediate dispatch ensuring downtime of equipment is kept to a minimum and production is maximised.
Service of your own equipment by our factory trained fitters at U Mole's main depot at Great Gransden is also available with special rental during service rates applying.
The Technique
Impact moling is a technique in which a percussive mole (soil displacement hammer) is launched from an excavation to displace the soil and form a bore.
The new conduit is normally drawn in behind the mole or pulled back into the bore using the hammers reverse action. Pneumatically driven moles, in which the soil is displaced by the action of a percussive piston, have been developed in the range 30 - 180mm diameter for a single operation, with repetitive multiple passes to achieve 200 - 250mm diameter.
Utility companies and their contractors use moles on a daily basis to lay new or replace existing services usually up to about 63mm diameter. However, larger bores are also common laying pipes up to 180mm, with lengths sometimes exceeding 40m.
