Technical Foundation
What Is a Tube Clamp?
Tube clamps secure rigid hydraulic and pneumatic tubing to a machine frame or structure, absorbing vibration and preventing fatigue failure at fittings that would otherwise bear the full weight and movement of an unsupported line. Unlike pipe clamps sized to nominal pipe sizes, tube clamps are sized to the exact outer diameter (OD) of the tubing in millimeters or inches, since hydraulic tube is specified and manufactured to precise OD tolerances rather than the nominal-bore convention used for pipe.
DIN 3015 defines the dominant clamp series — light (L), standard (S) and heavy (H) — differentiating clamp body thickness and cushion insert hardness to match the pressure and vibration duty of the line. A polypropylene or elastomer cushion insert sits between the clamp body and tube, both cushioning vibration and, in conductive installations, providing a defined point for grounding or electrical isolation; twin clamps stack two tubes side by side under one mounting bolt for compact multi-line runs.
Prefer a quick quote?
Get Tube Clamps Pricing in Your Inbox
Skip the search — tell us the tube outer diameter, clamp series (light/standard/heavy) and material and we will come back with pricing.
| Spec | What It Means | Why It Matters |
|---|---|---|
| Tube OD | Exact outer diameter in mm or inches | Clamp cushion insert must match tube OD precisely — unlike pipe, tube sizing has no nominal-bore rounding |
| DIN 3015 Series | Light (L), Standard (S), Heavy (H) | Sets clamp body thickness and cushion hardness for the vibration and pressure duty expected |
| Configuration | Single tube vs. twin tube (stacked) | Twin clamps mount two parallel lines under one bolt for compact multi-line installations |
| Cushion Material | Polypropylene, elastomer, or PTFE | Cushion absorbs vibration and can provide electrical isolation between tube and frame |
| Clamp Body Material | Steel (zinc or powder coated), stainless steel | Stainless suits washdown or corrosive environments; coated steel suits general industrial use |
Shop Tube Clamps
Browse Tube Clamps Sub-Categories
Organised by clamp configuration and material. Pick a sub-category, or tell ChatMRO the exact tube OD you need to clamp.
How it works
From Half-Remembered Part Number to PO, in Three Steps.
Ask
Type an MPN, paste a spec sheet, or describe the part in plain English. ChatMRO understands engineer-speak.
Compare
Side-by-side specs, cross-references, and equivalents from multiple sources — without the clutter of endless browser tabs.
Quote & Buy
Request a quote or add to cart. Volume discounts, VAT-aware pricing, and consolidated procurement — all in one place.
Applications
Where Tube Clamps Get Used
Tube clamps are specified anywhere rigid hydraulic, pneumatic or process tubing needs vibration-resistant support along its run.
Mobile Hydraulic Equipment
Clamping hydraulic tube runs on excavators, loaders and agricultural equipment against constant vibration.
Hydraulic Power Unit Manufacturing
Securing tube runs between pumps, valves and cylinders on fabricated power unit skids.
Machine Tool Hydraulics
Supporting hydraulic and pneumatic lines routed through CNC machine enclosures and cabinets.
Pneumatic Control Systems
Clamping air lines on automated assembly and packaging equipment to prevent fatigue at fittings.
Marine & Offshore Equipment
Stainless steel tube clamps for corrosion resistance in hydraulic systems exposed to saltwater.
Process Skid Fabrication
Organizing and supporting multiple parallel tube runs on fabricated process and utility skids.
FAQ
Tube Clamps Questions, Answered
Why does tube clamp sizing use exact OD instead of nominal pipe size?
Hydraulic and pneumatic tubing is manufactured to a precise outer diameter (e.g., 12mm, 16mm, 1/2 inch) rather than the nominal-bore convention used for pipe, where the 'size' doesn't match any actual dimension. Because a tube clamp's cushion insert must grip the tube surface directly, the clamp is sized to that exact OD — ordering by a rounded or approximate size risks a loose or over-tight fit.
What's the difference between light, standard and heavy series clamps (DIN 3015)?
DIN 3015 series differ in clamp body wall thickness and cushion insert hardness: light series suits low-pressure, low-vibration lines; standard series covers most general hydraulic applications; heavy series uses a thicker body and firmer cushion for high-pressure lines subject to significant vibration or shock loading, such as on mobile equipment. Match the series to your system's operating pressure and vibration environment, not just the tube size.
Can I use a twin tube clamp to save space instead of two single clamps?
Yes, twin tube clamps stack two parallel tube runs of the same OD under a single mounting bolt, which is common where multiple hydraulic or pneumatic lines run alongside each other on a skid or machine frame. Confirm both tubes are the same OD, since twin clamps aren't typically made in mixed-size configurations.
Does the cushion insert material matter for my application?
Yes — polypropylene cushions are the standard general-purpose choice, offering good vibration damping and chemical resistance. Elastomer or rubber cushions provide softer vibration isolation for higher-shock applications. In installations where electrical grounding or isolation between the tube and frame matters, the cushion material's dielectric properties become relevant and should be checked against the application's requirements.
How far apart should tube clamps be spaced along a run?
Spacing depends on tube OD, wall thickness and the vibration environment, but a common guideline is supporting hydraulic tube every 24-40 tube diameters, with closer spacing near fittings, bends and any point of connection to moving components. Unsupported spans that are too long allow the tube to flex and fatigue at the nearest fitting, which is the most common cause of hydraulic line failure from inadequate clamping.
Keep browsing
Related Categories
Explore More
Find Your Next Part Now.
Describe a part number, spec or what it does.