Xem Studiomeasured geometry

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Brake strap 20 × 1.5 wrapped 228.78° round a Ø60 drum, eyes on Ø4 pins 24 mm apart

What is a strap brake band? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: brake band, strap brake band, cinta de freno, Bremsband

Exact dimensions. True size, with no printing tolerance added.

length
63.0 mm
width
83.0 mm
height
20.0 mm

Notes

  • Steel strap 20 wide, 1.5 thick, bent to the Ø60 drum (inside radius 30, line on line) over 228.78°, its two straight legs running tangent from the drum to eyes (Ø4 bore) round the lever's two pins, 24 mm apart and 48 mm below the drum's axis; drawn at its working shape.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Brake strap 20 × 1.5 wrapped 228.78° round a Ø60 drum, eyes on Ø4… size chart

dimensionvalue
strap20 × 1.5
wrap228.78°
eyesØ4, 24 mm apart

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Henry T. Brown (1868, public domain)Five Hundred and Seven Mechanical Movements — scan on archive.orgwebPublisher's page; dimensions are facts
507movements.comBrown's movement No. 242: figure, his text and an animationwebPublisher's page; dimensions are facts
Xem StudiodrawingwebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json

brake-strap-20x1-5-drum60-pins24strap in place, drum axis at the origin, z 0..20STEP · STL
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Plain text: sheet.txt · JSON: /api/geometry?object=brake-strap-20x1-5-drum60-pins24

Brake strap 20 × 1.5 wrapped 228.78° round a Ø60 drum, eyes on Ø4 pins 24 mm apart, isometric render of a generated part
Render of brake-strap-20x1-5-drum60-pins24 from the free STEP; not to scale.

Fits with

Crane strap brake: steel strap round a drum, tightened by a lever, isometric render of a generated part
Crane strap brake: steel strap round a drum, tightened by a lever4 sizes★ 1 file

Questions

What is a strap brake band?

Steel strap 20 wide, 1.5 thick, bent to the Ø60 drum (inside radius 30, line on line) over 228.78°, its two straight legs running tangent from the drum to eyes (Ø4 bore) round the lever's two pins, 24 mm apart and 48 mm below the drum's axis; drawn at its working shape.