Korea Vibro hammer

Sterling Hammer is an existing most powerful hammer in the same class!

Sterling Hammer

Sterling Hammer is an existing most powerful hammer in the same class!

Sterling Hammer Job Applications

Significantly wider offering & 4 market segments enable further success

Sea Side

River Side

Sand Field

With Auger

Specification

Sterling Hammer
String
String
Model Unit SH25 SH30 SH40
Suitable Excavator ton 20~26 28~36 36~50
Weight (Incl. Mounting Cap) kg 1,520 1,810 2,050
Extension Boom Weight kg 498 600 714
Setting Pressure bar 250 250 280
Oil Flow lpm 170~200 180~220 240~260
Centrifugal Force kN 520 610 700
Frequency bpm 2,800~3,600 2,800~3,600 2,200~2,800
Rotation deg 360 360 360
Bottom Jaw open mm 65 65 65
Dimension (A x B x C) mm 1,094 x 711 x 1,862 1,094 x 805 x 1,862 1,200 x 900 x 1,950
* Specifications above are subject to change without notice.

Strong points of Sterling Hammer

Faster and more powerful
Faster penetration and pulling up than other vibratory hammers thanks to bigger and double eccentric weight

Easy maintenance

Low maintenance cost
Concise structure of components

Rotational mounting
- 360̊ hydraulic rotation system

Rigid and durability
Durable bearing structure and rigid rubber cushion

Easy installation & operation
Concise operation electric kits

Comparison and type of Vibratory hammers

“N” Company type

vs

Sterling Technology

“N” Company type Sterling Technology
Feature Twist correction hole in the middle of the body Free tilt clamp Arm & Jaw type, indirect clamp cylinder structure Free revolving mounting adapter Twist correction hole on the mounting adapter Non tilt clamp. Arm & Jaw type clamp. Hydraulic revolving mounting adapter
Strong point Low failure rate/Long life time of clamp cylinder Low failure rate/Long life time of clamp cylinder One class higher vibratory power than “D” Company
Weak point Low vibratory power Difficult to interlock sheet piles due to free tilt structure Sheet pile is likely to be bent due to free tilt structure Expensive Non tilt structure – Need an assistant of operator

Drawback of Tilt clamp type

Sheet pile is likely to be bent due to tilt structure if operator is not skilled.

vs

Difficult to put sheet pile straight, having the risk of getting damage of pile by unintended tilt operation.

Difficult to interlock sheet piles due to tilt structure

vs

High maintenance cost as the holes of connection of tilt are likely to be loosen and/or widened.

Sterling Hammer’s feature

Sterling Hammer’s advantage


Horizontal Structure

Sterling Hammer

Vertically Structure

Conventional Hammer

Sterling Hammer Traditional Vibro hammer
 Transverse cushion array minimize a chance of bending of hammer and piles./2 Longitudinal cushion array causes bending of hammer and pile which leads to damage to cushions and piles.

Sterling Hammer’s advantage : 15% higher efficiency than the same class hammer

 

Conventional Hammer

15% higher efficiency

Sterling Hammer

 Solution How to do & Effect
Centered double eccentric weights Unique design of centered double eccentric weights allow better durability of bearings

Conventional hammer’s bearings

Sterling hammer’s bearings

  Conventional hammer’s bearings Sterling hammer’s bearings
Distance from axis A A=B+C, B > C A=B+C, B = C
Center of gravity B and C ≠ A/2 B and C = A/2
Weight distribution “Bearing B” has more weight than “bearing A”. Weight of “A bearing” and “B bearing” is the same.
Effect Life time of both “A bearing” and “B bearing” is shorten due to imbalance of their weight. Longer life time of both “A bearing” and “B bearing”

Summary of Sterling Hammer’s selling point

 Feature How to do & Effect
1. Transverse cushion array
  • Transverse cushion array minimize a chance of bending of hammer and piles./
2. Most powerful hammer in class
  • Bigger and heavier eccentric weights make Sterling Hammer most powerful in class.
  • One class higher productivity and efficiency (15% higher than traditional vibratory hammers.)
3. Durable bearing structure
  • Unique design of durable bearing structure allows at least 2 times longer life time of bearings
4. Centered double eccentric weights
  • Unique design of centered double eccentric weights allow better durability of bearings
6. Low maintenance cost
  • Concise structure of components
  • Longer durability