TerraForge Machinery
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Worm gear hose clamps, also known as worm drive hose clamps, DIN 3017 non-perforated clamps, or German type hose clamps, are precision-engineered fastening solutions. The German-type design offers high clamping force and vibration resistance.
| Material Code | Corrosion Resistance | Material Composition |
|---|---|---|
| W1 | Normal | Screw, Housing and Band are all zinc plated. |
| W2 | Average | Screw is zinc plated. Housing and Band are 201/304 stainless. |
| W4 | High | Screw, Housing and Band are all 201/304 stainless steel. |
| W5 | Maximum | Screw, Housing and Band are all 316 stainless steel. |
| Material Code | 9 mm (0.35") Bandwidth | 12 mm (0.47") Bandwidth | ||
|---|---|---|---|---|
| Free Torque (Nm) | Breaking Torque (Nm) | Free Torque (Nm) | Breaking Torque (Nm) | |
| W1 | ≤ 0.8 | ≥ 5.5 | ≤ 0.8 | ≥ 6.0 |
| W2 | ≤ 0.6 | ≥ 6.0 | ≤ 0.6 | ≥ 7.0 |
| W4 | ≤ 0.6 | ≥ 6.0 | ≤ 0.6 | ≥ 7.0 |
| W5 | ≤ 0.6 | ≥ 6.0 | ≤ 0.6 | ≥ 7.0 |
Specializing in a full range of worm drive clamps, ear clamps, CV joint clamps, and T-bolt clamps. Every product meets international standards for durability and precision.
The non-perforated (embossed) band and rolled edges protect soft hoses from being cut or sheared during installation and use, making them ideal for silicone and rubber hoses.
For marine or chemical applications, W4 (304 Stainless Steel) or W5 (316 Stainless Steel) is recommended as they offer the highest resistance to rust and corrosion.
W1 consists of all zinc-plated carbon steel parts, suitable for basic indoor use. W4 is made entirely of 304 stainless steel, providing superior durability for outdoor and automotive use.
Yes, the German-type symmetric housing design ensures high clamping force and excellent resistance to vibration, preventing the clamp from loosening in automotive engines.
Yes, we provide OEM and ODM services. We can stamp your logo on the band and customize the clamping range and packaging to meet your specific requirements.
Our standard WN series hose clamps feature a band thickness of 0.6 mm (0.024") for both 9 mm and 12 mm band widths, ensuring a balance of flexibility and strength.
