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Belt Length Calculator

Unit Converters

open drive 2C + π(D+d)/2

Quick Answer

Belt Length Calculator: open drive 2C + π(D+d)/2. Belt Length Calculator uses standard unit conversion formulas to compute accurate results instantly.

Drive parameters

mm
mm
mm
Open belt theoretical length1,476.24 mm
Small-pulley wrap angle168.5°

How it works

  1. 1Straight runs 2C = 2 × 500 = 1,000 mm
  2. 2Arc term π(D+d)/2 = π × (200 + 100) ÷ 2 ≈ 471.24 mm
  3. 3Correction (D−d)²/(4C) = (200−100)² ÷ (4 × 500) = 5 mm; total L = 1,476.24 mm
For an open drive (same direction): L = 2C + π(D+d)/2 + (D−d)²/(4C); equal pulleys simplify to L = 2C + πD. Too long a center distance makes the belt whip; too short starves the wrap angle - keep C ≈ (0.7~2)(D+d) and the small-pulley wrap ≥ 120°. The result is theoretical: pick the next standard V-belt pitch length (A/B/C) above it, or count synchronous-belt teeth; tension via adjustable centers or an idler.

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How to Use

  1. Pick units: switch source and target units in the Belt Length Calculator.
  2. Enter a value: results sync both ways instantly — no convert button needed.
  3. Use the reference table: common conversions are listed for instant lookup.
  4. Copy the result: copy the converted value with its unit.

Key Points

  • Belt Length Calculator is a free online unit conversion tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: open drive 2C + π(D+d)/2.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

Belt Length Calculator formula

Belt Length Calculator uses standard unit conversion formulas to compute accurate results instantly.

FAQ

How do I use the Belt Length Calculator?
Open the page and fill in the input fields — results update automatically. open drive 2C + π(D+d)/2.
Are the results accurate?
Yes. Standard formulas and conversion factors are used and verified.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on phones, tablets and desktops.
Is my data saved?
No. Everything runs locally in your browser.

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Source & Updates

Based on SI conversion factors and international standards. Last updated: 2025-07

Authoritative sources:

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.

Cite this page: YiJianSuan. Belt Length Calculator[EB/OL]. https://www.yijiansuan.com/en/c/convert/belt-length

Results provided by this tool are for reference only and do not constitute professional advice.