VALICALC · TECHNICAL REFERENCE

Key & Keyway Size Chart

Find the sourced shaft-diameter interval, then read key width and height. The table is a bounded product-based cross-section reference; it does not certify torque capacity, fit or shaft/hub machining.

ValiCalc · Key & Keyway Size Chart
https://www.valicalc.com/keyway-size-chart
Dataset v1.1.0 · verified 2026-10-06

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Display: metric.

SELECT YOUR CONDITIONS

Search within the verified subset. Numeric sizes match complete designations; a nearby size is a candidate, not an exact match.

SELECTED REFERENCE

6 × 6

Key width
6 mm
Key height
6 mm
Shaft range
Shaft >17 to ≤22 mm
All fields & cell provenance
Shaft lower bound (exclusive)
17 mm
Shaft upper bound (inclusive)
22 mm

v1.1.0 · verified 2026-10-06

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Check nominal key stress with this cross-section →

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Torque from Power and RPM Calculator →Power from Torque and RPM Calculator →

6 × 66 mmBack to answer ↑

Explore the verified data

6 matching rows · 6 in this subset

Key & Keyway Size Chart, metric display
Key width × heightKey widthKey heightShaft rangeActions
4 × 44 mm4 mmShaft >10 to ≤12 mm
5 × 55 mm5 mmShaft >12 to ≤17 mm
6 × 66 mm6 mmShaft >17 to ≤22 mm
8 × 78 mm7 mmShaft >22 to ≤30 mm
10 × 810 mm8 mmShaft >30 to ≤38 mm
12 × 812 mm8 mmShaft >38 to ≤44 mm

4 × 4

Key width
4 mm
Key height
4 mm
Shaft range
Shaft >10 to ≤12 mm
More dimensions
Shaft lower bound (exclusive)
10 mm
Shaft upper bound (inclusive)
12 mm

5 × 5

Key width
5 mm
Key height
5 mm
Shaft range
Shaft >12 to ≤17 mm
More dimensions
Shaft lower bound (exclusive)
12 mm
Shaft upper bound (inclusive)
17 mm

6 × 6

Key width
6 mm
Key height
6 mm
Shaft range
Shaft >17 to ≤22 mm
More dimensions
Shaft lower bound (exclusive)
17 mm
Shaft upper bound (inclusive)
22 mm

8 × 7

Key width
8 mm
Key height
7 mm
Shaft range
Shaft >22 to ≤30 mm
More dimensions
Shaft lower bound (exclusive)
22 mm
Shaft upper bound (inclusive)
30 mm

10 × 8

Key width
10 mm
Key height
8 mm
Shaft range
Shaft >30 to ≤38 mm
More dimensions
Shaft lower bound (exclusive)
30 mm
Shaft upper bound (inclusive)
38 mm

12 × 8

Key width
12 mm
Key height
8 mm
Shaft range
Shaft >38 to ≤44 mm
More dimensions
Shaft lower bound (exclusive)
38 mm
Shaft upper bound (inclusive)
44 mm

Check the boundary before choosing a key

  • The lower shaft bound is exclusive and the upper bound inclusive in this subset.
  • A 30 mm shaft belongs to the >22 to ≤30 mm interval; do not silently move it to the next range.
  • Width × height is not keyway depth, key length, fit tolerance or a strength rating. Those need their own verified source.

How to interpret the result

Use the record as a geometry lookup. A torque estimate does not establish key shear/contact stress or shaft strength without material, length, fit and loading context.

Torque from Power and RPM Calculator →workflows/shaft torque key →

REAL INPUTS · CLEAR METHOD

Practical worked examples

Illustrative scenarios using this page’s calculation or verified reference model. Change the assumptions for your own job.

30 mm shaft at the upper inclusive boundary

Given

Selected row
8 × 7
Calculation / lookup method

Locate the shaft diameter within the published product range (lower,upper]. The key's width/height is a dimensional selection; obtain the actual shaft/hub keyway drawing for machining.

Result

Key width
8 mm
Key height
7 mm
Shaft lower bound (exclusive)
22 mm
Shaft upper bound (inclusive)
30 mm
Shaft range
Shaft >22 to ≤30 mm

The sourced interval is >22 to ≤30 mm. This returns an 8 × 7 mm cross-section, not a machining-depth or key-strength approval.

Open this reference scenario ↑

KEEP THE JOB MOVING

Where does this result go next?

Previous stepForce from Torque and Radius Calculator

Calculate tangential force

Follow the full workflow: Shaft torque and key geometry check →

How to use this data

Locate the shaft diameter within the published product range (lower,upper]. The key's width/height is a dimensional selection; obtain the actual shaft/hub keyway drawing for machining.

  • Shaft ranges use exclusive lower and inclusive upper boundaries.
  • Dimensions are the selected product family, not a full DIN tolerance standard.

CHECK THE METHOD

Worked example

20 mm shaft is in(17,22]mm and maps to the selected 6×6 mm key cross-section.

REAL INPUTS · CLEAR METHOD

Practical worked examples

Illustrative scenarios using this page’s calculation or verified reference model. Change the assumptions for your own job.

20 mm shaft key geometry

Given

Selected row
6 × 6
Calculation / lookup method

Locate the shaft diameter within the published product range (lower,upper]. The key's width/height is a dimensional selection; obtain the actual shaft/hub keyway drawing for machining.

Result

Key width
6 mm
Key height
6 mm
Shaft range
Shaft >17 to ≤22 mm

20 mm falls in the >17 to ≤22 mm range. Key length, tolerances and transmitted-load capacity require separate design data.

Open this reference scenario ↑

30 mm shaft at an inclusive range boundary

Given

Selected row
8 × 7
Calculation / lookup method

Locate the shaft diameter within the published product range (lower,upper]. The key's width/height is a dimensional selection; obtain the actual shaft/hub keyway drawing for machining.

Result

Key width
8 mm
Key height
7 mm
Shaft range
Shaft >22 to ≤30 mm

30 mm is included in the >22 to ≤30 mm row. Reading the boundary correctly avoids moving prematurely to the next key size.

Open this reference scenario ↑

12 mm shaft at the lower listed size

Given

Selected row
4 × 4
Calculation / lookup method

Locate the shaft diameter within the published product range (lower,upper]. The key's width/height is a dimensional selection; obtain the actual shaft/hub keyway drawing for machining.

Result

Key width
4 mm
Key height
4 mm
Shaft range
Shaft >10 to ≤12 mm

12 mm belongs to the >10 to ≤12 mm row in this subset. This is a bounded dimensional lookup, not a shaft strength calculation.

Open this reference scenario ↑

Related calculators

CalculatorTorque from Power and RPM CalculatorCalculatorPower from Torque and RPM CalculatorCalculatorParallel Key Stress Calculator

Continue the reference workflow

ReferenceGear Module ChartReferenceSpur Gear Dimensions Reference

Common lookup questions

Which range owns a 22 mm shaft?

The(17,22]range owns 22 mm. Diameters greater than 22 mm move to the next range; boundary values are not duplicated.

TRACEABLE DATA

Sources, scope & verification

Dataset v1.1.0
Last verified:

Selected Ganter product cross-sections for shafts >10 mm through 44 mm. No keyway tolerance/depth table is reproduced.

Values are curated product facts or generated scenarios. Paid standards, complete catalogs and source diagrams are not reproduced. A verification date applies to this documented subset.

Ganter stainless parallel-key product dimensions ↗

Type D · GANTER · Product page1113; document revision not stated

Selected dimensional product facts only; no catalog text, diagrams, standard tolerances or full paid-standard tables.

Full provenance & artifact record
Source checked
2026-10-06
Use basis
bounded-product-facts
Artifact SHA-256
446bf384dfe634af647ff3a88b9588cbf60e45ff24129b3e2d4f35efce1deb89

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