Worm Gear Sets A25

Worm Gear Set A25
Dimensional drawing Worm Gear Set A25
Legende
i = gear ratio da1 = tip diameter (worm) T2 = output torque
γm = Lead angle z2 = No. of teeth (worm gear) MF = mineral grease
mn = module dm2 = pitch diameter (worm gear) MÖ = mineral oil / synthetic grease
z1 = number of threads (worm) dA = max. diameter (worm gear) SÖ = synthetic oil
dm1 = pitch diameter (worm)
Axial distance 25 mm i Lead angle m Worm Worm gear T2 [Nm]
Shop Bronze
CAD-Data z1 dm1 da1 z2 dm2 dA MF
A25Ü4 4:1 20°29′ 1,4 5 20 22,8 20 30,0 33,5 5,1 6,1 7,6
A25Ü5 5:1 19°15′ 1,5 4 18,2 21,2 20 31,8 34,8 6,5 7,8 9,7
A25Ü6 6,5:1 13°52′ 1,15 4 19,2 21,5 26 30,8 34,8 6 7,2 9
A25Ü10 10:1 8°48′ 1,5 2 19,6 22,6 20 30,4 34,8 5,9 7,1 8,8
A25Ü15 15:1 6°29′ 1,0 2 17,7 19,7 30 32,3 34,8 5,7 6,8 8,5
A25Ü20 20:1 4°19′ 1,5 1 19,9 22,9 20 30,1 34,8 5,8 7,0 8,7
A25Ü25 25:1 2°18′ 1,0 1 24,96 26,96 25 25,04 27,8 4,1 4,9 6,1
A25Ü30 30:1 2°53′ 1,0 1 19,9 21,9 30 30,1 33,5 5,9 7,1 8,8
A25Ü40 40:1 2°33′ 0,8 1 17,96 19,56 40 32,04 34,8 6,2 7,4 9,3
A25Ü50 50:1 1°43′ 0,6 1 19,96 21,16 50 30,04 33,5 5,1 6,1 7,6

All worms and worm gears stocked right hand only.
Worm made of case hardened and ground steel (HV 620 – 700). Lead content is ≤0.1 percent by weight.
Worm gear made of CuZn37Mn3Al2Si. Lead content is ≤0.1 percent by weight.
Phenolic worm gears do not have the pre-drilled start for a pin. The outside diameter of the phenolic gear hub is 18 mm.
On request worm gears can be made of plastic or HGW 2083.

The output torque rating (T2) applies to the initial speed of 2800 rpm at the worm (shaft).
The efficiency values (see table in worm gear set catalog) are guidelines. The bearing, lubrication, speed, and installation, in addition to the lead angle, can influence efficiency.

Gears may be combined only with worms of the same axial distance and with the same transmission ratio.
Worms or worm gears from other manufacturers may not be paired with the counterpiece from Framo Morat. It is almost always necessary to adjust the toothing specifications.
All dimensions can be adapted upon request.

Is your desired gear set not available? Request your gear set!
Moderate quantities are usually available from stock, larger quantities are delivered in partial quantities or upon request.

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Application examples

Worm Gear Sets overview

Worm Gear Sets