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Constant Tension Clamps
Constant Tension Clamp

Constant Tension Clamps

Winlong’s Constant Tension Worm Drive Hose Clamps are the ultimate solution for applications experiencing extreme temperature fluctuations. Featuring an integrated heat-treated spring liner, these clamps automatically adjust their diameter to compensate for the expansion and contraction of hoses and fittings. This "active" sealing mechanism ensures consistent radial tension, eliminating the need for periodic retightening and preventing "cold leaks" in cooling and charge-air systems.
Band 5/8" band width / 9/16" band width / 1/2" band width 300 stainless steel
Screw 3/8" hex head screw 410 stainless steel
Housing 300 stainless steel
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Technical Specifications Features Applications
SAE Part# Clamping Range Fits Hose
Inch mm Inch mm 
212 CT58-212 1-1/4 2-1/8 32 54 1 1-1/2 25 38
262 CT58-262 1-3/4 2-5/8 45 67 1-1/2 2 38 51
312 CT58-312 2-1/4 3-1/8 57 79 2 2-1/2 51 64
362 CT58-362 2-3/4 3-5/8 70 92 2-1/2 3 64 76
412 CT58-412 3-1/4 4-1/8 83 105 3 3-1/2 76 89
462 CT58-462 3-3/4 4-5/8 95 117 3-1/2 4 89 102
512 CT58-512 4-1/4 5-1/8 108 130 4 4-1/2 102 114
562 CT58-562 4-3/4 5-5/8 121 143 4-1/2 5 114 127
612 CT58-612 5-1/4 6-1/8 133 155 5 5-1/2 127 140
662 CT58-662 5-3/4 6-5/8 146 168 5-1/2 6 140 152
712 CT58-712 6-1/4 7-1/8 159 181 6 6-1/2 152 165
762 CT58-762 6-3/4 7-5/8 172 194 6-1/2 7 165 178
812 CT58-812 7-1/4 8-1/8 184 206 7 7-1/2 178 191
862 CT58-862 7-3/4 8-5/8 197 219 7-1/2 8 191 203
912 CT58-912 8-1/4 9-1/8 210 232 8 8-1/2 203 216

  • Self-Adjusting Spring Liner: The internal spring steel band maintains constant pressure during thermal cycling, ensuring a reliable seal from sub-zero temperatures to extreme heat.

  • Anti-Vibration Performance: The continuous tension design provides excellent resistance to loosening in high-vibration environments, making it ideal for heavy-duty engines.

  • Hose Surface Protection: The smooth inner liner covers the band perforations, protecting soft silicone and rubber hoses from shearing or extrusion.

  • High Torque Capacity: Combines the high-tightening strength of a worm gear drive with the flexibility of a spring clamp for maximum reliability.

  • Automotive & Commercial Vehicles: Primarily used in engine cooling systems, radiator hoses, and turbocharger (intercooler) connections where heat cycles are frequent.

  • Heavy Equipment & Construction: Vital for hydraulic oil coolers and heavy-duty diesel engine coolant lines in earthmoving machinery.

  • Agriculture: Used in irrigation pumps and tractor engine systems that operate under variable environmental temperatures.

  • Marine & Power Generation: Ideal for marine engine wet exhaust and cooling systems, ensuring a permanent seal in demanding offshore conditions.

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Why Partner With Us?

At Winlong, we believe in precision engineering that supports your project's integrity. Our mission is to provide high-performance metal components that are durable, reliable, and compliant.

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    100% Independent Automation & Stability
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    Expert Engineering & "Lean Manufacturing"
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