Smooth-Band Hose Clamping
German-Type Non-Perforated Worm-Drive Hose Clamps
The DISLAB PRECISION German-Type Non-Perforated Worm-Drive Hose Clamp combines a non-perforated, smooth inner band with a compact offset housing and worm-drive tightening mechanism. The design distributes clamping pressure more evenly while reducing the risk of cutting, scratching or crushing soft rubber and plastic hoses.
Product Overview
Controlled Clamping for Soft and Flexible Hoses
Conventional perforated clamps can leave pressure marks or allow the hose surface to enter the band slots during tightening. This German-type clamp uses an embossed outer thread pattern while maintaining a smooth, toothless inner band. The hose contacts a continuous metal surface rather than exposed perforations.
The worm-drive screw draws the band through the housing and allows gradual diameter adjustment. Its offset housing keeps the tightening mechanism compact, making the clamp suitable for hose connections where access around the joint is limited.
Available material combinations cover general indoor use, mixed stainless configurations and full stainless assemblies. Final selection should be based on the hose material, operating environment, required clamp range and corrosion exposure.
Key Features
Functional Details That Matter at the Hose Joint
Each feature supports controlled installation, secure retention and more suitable contact with flexible hose materials.
Non-Damaging Inner Contact
The smooth inner surface has no open perforations facing the hose. This helps reduce local cutting, scratching and extrusion when clamping rubber or plastic hose walls.
More Even Pressure Distribution
The continuous band spreads clamping force around the hose circumference, helping limit concentrated pressure points that can contribute to deformation or leakage.
Positive Worm-Drive Adjustment
The screw-driven mechanism provides progressive adjustment during installation and supports secure retention when the correct clamp range and installation method are used.
Compact Offset Housing
The offset housing places the tightening mechanism close to the band profile, improving tool access around hose joints installed in narrow or crowded spaces.
Structure and Design
How the Toothless Band and Offset Housing Work
The clamp is made from three main components: the band, the worm-drive screw and the housing. Their material combinations vary by the selected W1, W2, W4 or W5 configuration.
Material Options
W1, W2, W4 and W5 Material Configurations
Material selection affects corrosion resistance, cost and suitability for the installation environment. Confirm the required band, screw and housing combination when requesting a quotation.
Galvanized Steel Assembly
Band: Galvanized steel
Screw: Galvanized steel
Housing: Galvanized steel
Stainless Band and Housing
Band: SS200/SS300 series
Screw: Galvanized steel
Housing: SS200/SS300 series
Stainless Steel Assembly
Band: SS200/SS300 series
Screw: SS200/SS300 series
Housing: SS200/SS300 series
SS316 Corrosion-Resistant Configuration
Band: SS316
Screw: SS316 or SS304
Housing: SS316
Technical Specifications
German-Type Non-Perforated Worm-Drive Hose Clamp Specifications
The following values are taken from the supplied product information. Exact clamp ranges, packaging and optional configurations should be confirmed before ordering.
| Parameter | Available Specification | Selection Note |
|---|---|---|
| Product type | German-type non-perforated worm-drive hose clamp | Smooth inner band with offset housing |
| Band width | 9 mm or 12 mm | Select according to hose size, available space and required contact width |
| Band thickness | Zinc-plated steel: 0.8 mm Stainless steel: 0.7 mm |
Depends on the selected material configuration |
| Clamp range | Starting from 8–12 mm; additional ranges available | Confirm the actual outside diameter of the installed hose joint |
| Screw head size | 7 mm | Confirm tool access around the installation area |
| Screw drive | Phillips (+) or slotted (−) | Available configuration may depend on size and order requirements |
| Material codes | W1, W2, W4 and W5 | Refer to the material configuration table above |
| Custom options | Available on request | Specify size range, material, band width, screw type and packaging requirements |
Applications
Where German-Type Non-Perforated Worm-Drive Hose Clamps Are Used
The smooth-band design is intended for hose joints that need secure adjustment without exposing the hose to open band perforations.
Automotive Systems
Hose connections in engine cooling, air intake and compatible fluid-line assemblies, subject to the requirements of the hose, fitting and vehicle system.
Plumbing and HVAC
Flexible water supply, drainage, air-conditioning and ventilation hose connections where compact installation and adjustable clamping are required.
Agricultural Equipment
Irrigation lines, spraying equipment and flexible hose assemblies used on agricultural machinery and fluid distribution systems.
Marine Equipment
Moisture-exposed hose connections and selected mild saltwater environments when an appropriate stainless steel configuration is specified.
Industrial Piping
Soft hose and flexible pipeline joints in chemical handling, food and beverage equipment and general industrial systems, depending on media compatibility.
Machinery and Equipment
Compact hose joints in machinery, pumps, utility equipment and assemblies where access around the connection is restricted.
Problems Solved
What Problems This Clamp Design Addresses
Hose Damage from Open Perforations
A smooth inner band reduces direct contact between the hose and sharp slot edges, helping protect soft hose surfaces during tightening.
Uneven Circumferential Pressure
Continuous band contact spreads the clamping load more evenly and helps reduce isolated compression points around the connection.
Limited Installation Space
The offset housing provides a compact tightening arrangement for hose joints positioned close to surrounding components or equipment walls.
Incorrect Material Selection
W1, W2, W4 and W5 options allow the band, screw and housing materials to be matched more closely to cost and corrosion requirements.
DISLAB PRECISION
Why Source These Hose Clamps from DISLAB PRECISION
Industrial buyers need clear specifications rather than a generic clamp description. DISLAB PRECISION supports product selection around the actual hose joint and purchasing requirements.
Defined Material Combinations
W1, W2, W4 and W5 configurations distinguish the materials used for the band, screw and housing.
Application-Based Selection
Clamp range, band width and material can be reviewed according to hose diameter, environment and installation space.
B2B Specification Support
Buyers can submit size schedules, drawings, material requirements and packaging instructions for quotation review.
Customization Options
Specify the Clamp for Your Hose Assembly
The correct configuration depends on more than the clamp diameter. The hose material, fitting diameter, exposure conditions and available installation space should also be considered.
Selection Reminder
Measure the outside diameter of the assembled hose and fitting rather than using only the hose bore size.
Select a clamp range that contains the measured diameter without placing the working point unnecessarily close to the minimum or maximum adjustment limit.
For corrosive or moisture-exposed environments, state the required material for each component rather than requesting only a “stainless clamp.”
Ordering Information
Information to Include in Your RFQ
Providing complete application details helps DISLAB PRECISION identify the appropriate German-Type Non-Perforated Worm-Drive Hose Clamp configuration and reduces clarification delays.
- Installed hose outside diameter or required clamp range in mm
- Required band width: 9 mm or 12 mm
- Material code: W1, W2, W4 or W5
- Hose material and fitting material
- Operating environment, including moisture, chemicals or salt exposure
- Required screw drive configuration, when applicable
- Order quantity and packaging requirements
- Drawing, photograph or size schedule for project-specific assemblies
Product-Specific FAQ
German-Type Non-Perforated Worm-Drive Hose Clamp FAQ
What does “toothless inner band” mean on this hose clamp?
It means the hose-contact surface is smooth and does not contain open perforations. The drive pattern is formed so that the screw can adjust the band without exposing slot edges directly to the hose.
How do I choose the correct clamp size?
Install the hose over its fitting and measure the outside diameter at the clamping position. Select a clamp range that includes this measured diameter. Do not choose solely from the nominal inside diameter printed on the hose.
When should I select a 9 mm band instead of a 12 mm band?
A 9 mm band may be suitable for smaller connections or areas with limited axial space. A 12 mm band provides a wider contact area. The final choice should consider hose size, hose-wall construction, fitting width and available installation space.
What is the difference between W1, W2, W4 and W5?
W1 uses galvanized steel for the band, screw and housing. W2 uses an SS200/SS300-series band and housing with a galvanized steel screw. W4 uses SS200/SS300-series material for all three components. W5 uses an SS316 band and housing with an SS316 or SS304 screw.
Can this clamp be used on soft rubber or plastic hoses?
The smooth inner band is designed to reduce marking and cutting compared with open-perforated bands, making it suitable for many soft hose applications. Compatibility still depends on hose material, wall thickness, tightening method, fitting shape and operating conditions.
What tools can be used to tighten the clamp?
The listed screw head size is 7 mm. Phillips (+) or slotted (−) drive configurations are also available depending on the selected clamp version. Confirm the required screw design when placing the order.
What is the benefit of the offset housing?
The offset arrangement keeps the screw assembly compact and can improve access when the hose joint is close to nearby components. Available clearance for the tool should still be checked before installation.
Which material should be selected for wet or marine environments?
Stainless configurations such as W4 or W5 should be considered when corrosion exposure is higher. W5 includes an SS316 band and housing. The final choice depends on salinity, chemicals, cleaning agents, exposure duration and the required service life.
Are custom clamp ranges and packaging options available?
Additional clamp ranges and project-specific packaging can be reviewed on request. Include the required sizes, material code, band width, quantities and packaging instructions in the RFQ.
Request German-Type Non-Perforated Worm-Drive Hose Clamps for Your Application
Send DISLAB PRECISION your installed hose diameter, preferred band width, material code, application environment and required quantity for specification review and quotation.
Explore the Complete Industrial Clamps Range
Download the DISLAB PRECISION Industrial Clamps Catalog to compare clamp families, materials, construction options and typical applications. Use it to shortlist a suitable design, then send us your dimensions, operating conditions and required quantity for review.
Request a Hose Clamp Quotation
Tell us the clamp type, installed hose outside diameter, preferred material, required quantity, application and destination country. Our team will review the details and respond with practical specification and quotation guidance.
Need to send drawings or specifications?
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