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Heavy Duty T-Bolt Spring Loaded Clamp
Spring Loaded T-Bolt Clamps use a 19 mm wide, 0.6 mm thick stainless steel band, with SS201 and SS304 available. T-bolt and spring assemblies are matched to the clamp size. Standard sizes use M6 hardware, while larger-diameter clamps can be supplied with M8 hardware. Heavy-duty versions use a zinc-plated spring with washers positioned at both ends to help keep the spring properly seated during tightening. Straight or bent T-bolts, metal lock nuts, and nylon insert lock nuts are available depending on the required configuration.
Unlike standard T-bolt clamps, spring-loaded versions should be selected not only by hose outside diameter and clamping range, but also by the spring compression after installation. During production, we check clamp dimensions, spring assembly condition, and surface quality. For replacement orders, matching sizes and configurations can also be confirmed against your existing clamp, sample, or current specifications.
Unlike standard T-bolt clamps, spring-loaded versions should be selected not only by hose outside diameter and clamping range, but also by the spring compression after installation. During production, we check clamp dimensions, spring assembly condition, and surface quality. For replacement orders, matching sizes and configurations can also be confirmed against your existing clamp, sample, or current specifications.
Product Description
| SAE No. | Standard Spring Clamp Size - Inch | Standard Spring Clamp Size - mm | Heavy Spring Clamp Size - Inch | Heavy Spring Clamp Size - mm |
| / | / | / | 2 1/8-2 7/16 | 54-62 |
| / | / | / | 2 1/4-2 9/16 | 57-65 |
| / | / | / | 2 1/8-2 11/16 | 60-68 |
| / | / | / | 2 1/2-2 13/16 | 64-72 |
| / | / | / | 2 5/8-2 15/16 | 67-75 |
| / | / | / | 2 3/4-3 1/16 | 70-78 |
| 34 | 1 15/16-2 1/4 | 50-58 | 2 7/8-3 3/16 | 73-81 |
| 40 | 2 1/8-2 7/16 | 54-62 | 3-3 5/16 | 76-84 |
| 46 | 2 5/16-2 5/8 | 59-67 | 3 1/16-3 3/8 | 78-86 |
| 52 | 2 1/2-2 13/16 | 64-72 | 3 1/8-3 7/16 | 80-87 |
| 58 | 2 11/16-3 | 69-77 | 3 1/4-3 9/16 | 83-91 |
| 64 | 2 7/8-3 3/16 | 73-81 | 3 3/8-3 11/16 | 86-94 |
| 70 | 3 1/16-3 3/8 | 78-86 | 3 1/2-3 13/16 | 89-97 |
| 76 | 3 1/4-3 9/16 | 83-91 | 3 9/16-3 7/8 | 91-98 |
| 82 | 3 7/16-3 3/4 | 88-96 | 3 5/8-3 15/16 | 92-100 |
| 88 | 3 5/8-3 15/16 | 92-100 | 3 3/4-4 1/16 | 95-103 |
| 94 | 3 13/16-4 1/8 | 97-105 | 4 1/16-4 3/8 | 103-111 |
| 100 | 4-4 5/16 | 102-110 | 4 1/8-4 7/16 | 105-113 |
| 108 | 4 1/4-4 9/16 | 108-116 | 4 1/2-4 9/16 | 114-116 |
| 116 | 4 1/2-4 13/16 | 114-122 | 4 1/2-4 13/16 | 114-122 |
| 124 | 4 3/4-5 1/16 | 121-129 | 4 9/16-4 7/8 | 116-124 |
| 132 | 5-5 5/16 | 127-135 | 5-5 5/16 | 127-135 |
| 140 | 5 1/4-5 9/16 | 133-141 | 5 1/4-5 9/16 | 133-141 |
| 148 | 5 1/2-5 13/16 | 140-148 | 5 1/2-5 13/16 | 140-148 |
| 156 | 5 3/4-6 1/16 | 146-154 | 5 3/4-6 1/16 | 146-154 |
| 164 | 6-6 5/16 | 152-160 | 6-6 5/16 | 152-160 |
| 172 | 6 1/4-6 9/16 | 159-167 | 6 1/4-6 9/16 | 159-167 |
| 180 | 6 1/2-6 13/16 | 165-173 | 6 1/2-6 13/16 | 165-173 |
| Band Width (mm) | Material | Band | Bridge | Trunnion | Cap | Spring | Bolt | Nut | Suggested Installation Torque |
| 19 | W2 | AISI 301 / 304 Stainless Steel | AISI 301 / 304 Stainless Steel | AISI 301 / 304 Stainless Steel | AISI 304 Stainless Steel | Zinc-Plated Steel | Zinc-Plated Steel | Zinc-Plated Steel | 9 Nm |
| 19 | W4 | AISI 301 / 304 Stainless Steel | AISI 301 / 304 Stainless Steel | AISI 301 / 304 Stainless Steel | AISI 304 Stainless Steel | — | AISI 304 Stainless Steel | AISI 304 Stainless Steel | 9 Nm |
Consistent Clamping Compensation
Wide-Band Clamping and Hose Protection
A 19 × 0.6 mm stainless steel band provides a larger contact area around the hose, helping distribute T-bolt clamping load more evenly and reduce localized pressure. The floating bridge follows the band as it tightens, while the flanged tongue and finished band edges help reduce scratching and wear on the hose surface during installation. For silicone hoses, wire-reinforced hoses, and other connections requiring higher clamping force, you can achieve secure fastening while better protecting the hose at the joint.
Heavy-Duty Spring Locking Structure
SS201 or SS304 stainless steel bands can be combined with matching T-bolts, nuts, and spring assemblies according to clamp size. Heavy-duty spring versions use two washers and a spring with an approximate 20 mm diameter to provide more stable spring support during tightening, while larger sizes can use M8 fastening hardware for wider hose diameters. This structure is better suited to hose connections exposed to continuous vibration, temperature changes, and heavy-duty operating conditions, helping you maintain more consistent connection performance during long-term use.
Product Questions & Answers
Why Is a Spring Loaded T-Bolt Clamp Also Called a Constant Tension Clamp?
Spring Loaded T-Bolt Clamps add a spring compensation mechanism to the standard T-bolt structure. After tightening, the spring retains a working compression range and continues to compensate when hose diameter changes slightly because of temperature variation. This helps maintain a more stable clamping condition during repeated expansion and contraction.
T Bolt Clamps with Spring are therefore commonly described as constant tension clamps. “Constant tension” does not mean clamping force remains exactly unchanged under every condition. Actual compensation still depends on clamp size, spring compression, hose construction, and installation position.
How Should I Choose the Right Size of Spring Loaded T-Bolt Hose Clamp?
Should a Spring Loaded Hose Clamp Be Compressed as Much as Possible During Installation?
Is a 19 mm Wide Band Suitable for Every Heavy Duty T-Bolt Hose Clamp Application?
What Is the Standard Packing for Spring Loaded T-Bolt Clamps?
