How to calculate the volume of a round tube (bushing) using outside diameter and thickness?

Volume = π × thickness × (outside diameter - thickness) × length

How to calculate the volume of a round tube (bushing) using inside diameter and thickness?

Volume = π × thickness × (inside diameter + thickness) × length

How to calculate the volume of a round tube (bushing) using outside diameter and inside diameter?

Volume = (π / 4) × (outside diameter² - inside diameter²) × length

What units are supported for round tube volume calculation?

The calculator supports mm, cm, m, in, ft for dimensions and automatically converts between volume units (mm³, cm³, m³, in³, ft³).

Round Tube (Bushing) Volume & Weight Calculation

Calculate round tube (bushing) volume and weight with multiple input modes, supporting various units and materials.

Input

Outside diameter D
Thickness t

Inside diameter d
Thickness t

Outside diameter D
Inside diameter d

Outside Diameter D

Thickness t

Length L

Quantity

Volume

Weight

Material

Density

Weight

Round Tube (Bushing) Volume Formulas

Using Outside diameter D & Thickness t

$$V = \pi \times t \times (D-t) \times L$$

Where V is volume, π ≈ 3.14159, D is outside diameter, t is thickness, L is length

Using Inside diameter d & Thickness t

$$V = \pi \times t \times (d+t) \times L$$

Where V is volume, π ≈ 3.14159, d is inside diameter, t is thickness, L is length

Using Outside diameter D & Inside diameter d

$$V = \frac{\pi}{4} \times (D^2 - d^2) \times L$$

Where V is volume, π ≈ 3.14159, D is outside diameter, d is inside diameter, L is length

FAQ

What is the difference between a round tube and a bushing?
A round tube is a general term for any hollow cylindrical shape, while a bushing is specifically a mechanical component that provides a bearing surface between moving parts. Bushings are typically round tubes designed for specific engineering applications with precise tolerances.
How do I choose the right input method for my calculation?
Use "Outside diameter & Thickness" when you know the external size and wall thickness. Use "Inside diameter & Thickness" when the bore size and wall thickness are known. Use "Outside & Inside diameter" when both diameters are directly measurable or specified.
How do I measure tube dimensions accurately?
Use calipers to measure outside diameter at multiple points along the length. For inside diameter, use internal calipers or a bore gauge. Wall thickness can be measured directly with calipers or calculated as (OD-ID)/2. Always verify measurements are consistent along the length.
What are common applications for round tubes and bushings?
Applications include sleeve bearings, pivot bushings, hydraulic cylinders, structural tubing, pipe systems, and mechanical spacers. In manufacturing, they're used for reducing friction, providing precise fits, and creating bearing surfaces in rotating or sliding applications.
Can I use this calculator for tapered tubes or varying wall thickness?
This calculator assumes uniform wall thickness and constant diameter along the length. For tapered tubes or varying thickness, you'd need to use average values or break the part into sections with different dimensions and calculate each separately.
What materials are commonly used for round tubes and bushings?
Common materials include sintered bronze (self-lubricating), sintered iron, brass, steel, stainless steel, and engineering plastics. Material selection depends on load requirements, operating environment, lubrication needs, corrosion resistance, and cost. The calculator includes typical density values for these materials.