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 20~30 30~40 40~55
Weight (Incl. Mounting Cap) kg 1,520 1,810 2,050
Setting Pressure bar 300 300 300
Oil Flow Lpm 190 220 260
CentrifugalForce KN 600 800 950
Frequency rpm 2,800~3,600 2,600~3,600 2,200~2,800
Amplitude(mm) mm 6.9 7.5 8
Rotation degrees 360 360 360
Tilt angle degrees 0 0 0
Jaw open mm 65 65 65
Dimension (L x W x H) mm 1,094x711x1,862 1,094x805x1,862 1,200x900x1,950
Max. Working height m 8.5 10.5 11.5

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
Double 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 tilting clamp Arm & Jaw type, indirect clamp cylinder structure Free revolving mounting adapter Twist correction hole on the mounting adapter Non tilting 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 tilting structure Sheet pile is likely to be bent due to free tilting structure Expensive Non tilting structure – Need an assistant of operator

Drawback of Tilting clamp type

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

vs

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

Difficult to interlock sheet piles due to tilting structure

vs

High maintenance cost as the holes of connection of tilting 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

Sterling Hammer is an existing most powerful hammer in the same class!
Bigger and heavier eccentric weights make Sterling Hammer most powerful in class.

 Feature How to do & Effect
Double bearing structure Unique design of double bearing structure allows at least 2 times longer life time of bearings Double bearing structure enables bigger eccentric weights to maximize vibratory power.

Conventional Hammer’s bearings

Sterling Hammer’s bearings

  Conventional Hammer’s bearings Sterling Hammer’s bearings
Number of bearing Single bearing per each side of axis Double bearing per each side of axis

Advantages
- High vibratory power at the same size of bearings
- At least two  times longer life time of bearings
- Higher durability at hard-rock job sites
 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. Double bearing structure
  • Unique design of double 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