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5.5lb Soil Compaction Hammer (Standard)

Model: HM-550
$98.90
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Expert
Questions? Talk to a Product Expert

Get help from our in-house testing equipment specialists.

Open M–F: 8:00am–5:00pm

Soil Compaction Hammers are sliding drop proctor hammers used for the Proctor Compaction of soil samples. Gilson's Standard and Modified Hammers feature 100% 303 stainless steel construction for maximum corrosion resistance and long service life. Hammer masses are enclosed in guide sleeves with vent holes that ensure unrestricted free-fall.

The heavy knurled hexagonal cap is welded to the tube for a secure, comfortable grip during use and prevents rolling during storage. All hammer models have a 2in (51mm) flat, circular face.

HM-550 Soil Compaction Hammer (Standard) has 5.5lb (2.5kg) hammer mass with 12in (305mm) drop.

HM-551 Soil Compaction Hammer (Modified) has 10lb (4.5kg) hammer mass and 18in (457mm) drop.

The U.S. Army Corps of Engineers COE compaction hammers feature a recoil mechanism in the foot assembly to reduce wear on internal components, have a removable/replaceable tamping face and allow for slight drop adjustability.

HM-555 Soil Compaction Hammer (C.O.E) has a 5.5lb (2.5kg) hammer mass with 12in (305mm) drop.

HM-556 Soil Compaction Hammer (C.O.E) has 10lb (4.5kg) hammer mass and 18in (457mm) drop.

Features:

  • Standard and Modified Hammers feature 100% 303 stainless steel construction
  • A knurled hexagonal cap is welded for a secure grip (Standard and Modified models only)
  • COE hammers have a removable/replaceable tamping face, foot recoil mechanism, and slight drop adjustability

Included Items:

  • Manual Compaction Hammer

Related blogs:

Specifications

Attribute name Attribute value
Product Dimensions

HM-550: 21 x 2.2in (533 x 55mm) LxDia.

HM-551: 31 x 2.2in (787 x 55mm) LxDia.

Material HM-550 and HM-551 models: 100% 303 Stainless Steel
Estimated Shipping Weight

HM-550: 9.0lb (4.08kg)

HM-551: 15.0lb (6.80kg)

HM-555: 15.0lb (6.80kg)

HM-556: 19.0lb (8.62kg)

Quick Compare

Features
Picture of 5.5lb Soil Compaction Hammer (Standard)

5.5lb Soil Compaction Hammer (Standard)

Picture of 10lb Soil Compaction Hammer (Modified)

10lb Soil Compaction Hammer (Modified)

Picture of 5.5lb Soil Compaction Hammer (C.O.E)

5.5lb Soil Compaction Hammer (C.O.E)

Picture of 10lb Soil Compaction Hammer (C.O.E)

10lb Soil Compaction Hammer (C.O.E)

Pricing $98.90 $113.30 $205.00 $226.00
Configuration Standard Modified C.O.E. C.O.E.
Hammer Mass 5.5lb (2.5kg) 10lb (4.5kg) 5.5lb (2.5kg) 10lb (4.5kg)
Estimated Shipping Weight 9.0lb (4.08kg) 15.0lb (6.80kg) 15.0lb (6.80kg) 19.0lb (8.62kg)
 

Product Q&A

Displaying Q&A 1-4 of 8

Q: Will this work with fan-forced heaters?

I'm very satisfied with this product. It was exactly what I wanted in my travel trailer, for a lot more accurate heating. Now I can pinpoint it to exactly the temperature I want, instead of guessing, sliding the conventional thermostat back and forth. Will for sure save on propane too! Nice back light when adjusting the temperature, making it easy to see even at night.

Q: Will this work with fan-forced heaters?

I'm very satisfied with this product. It was exactly what I wanted in my travel trailer, for a lot more accurate heating. Now I can pinpoint it to exactly the temperature I want, instead of guessing, sliding the conventional thermostat back and forth. Will for sure save on propane too! Nice back light when adjusting the temperature, making it easy to see even at night.

Q: Will this work with fan-forced heaters?

I'm very satisfied with this product. It was exactly what I wanted in my travel trailer, for a lot more accurate heating. Now I can pinpoint it to exactly the temperature I want, instead of guessing, sliding the conventional thermostat back and forth. Will for sure save on propane too! Nice back light when adjusting the temperature, making it easy to see even at night.

Q: Will this work with fan-forced heaters?

I'm very satisfied with this product. It was exactly what I wanted in my travel trailer, for a lot more accurate heating. Now I can pinpoint it to exactly the temperature I want, instead of guessing, sliding the conventional thermostat back and forth. Will for sure save on propane too! Nice back light when adjusting the temperature, making it easy to see even at night.

Displaying Q&A 1-4 of 8
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