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
| 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
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.
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
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 |
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| 2. Most powerful hammer in class |
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| 3. Double bearing structure |
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| 4. Centered double eccentric weights |
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| 6. Low maintenance cost |
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