built for the toughest industrial automation applications
World class gear manufacturing capabilities, quality material suppliers, and a state of the art quality process allows us to offer the highest level of precision, durability and endurance.
Our offered Planetary Reducers are designed and built for advanced high speed low backlash applications. The manufacturing processes allows us to offer exceptional shock load capacities and various mounting options.
Precision Planetary
Ratios from 3:1 through 100:1
Backlash to 1 ARC minute
Frame sizes from 42mm to 180mm
Inline and right angle units
DĖL PAPILDOMOS INFORMACIJOS - SUSISIEKITE SU MUMIS
+370 700 70 154 | miromax@miromax.lt
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Planetary gears
PRECISION PLANETARY REDUCERS
built for the toughest industrial automation applications
World class gear manufacturing capabilities, quality material suppliers, and a state of the art quality process allows us to offer the highest level of precision, durability and endurance.
Our offered Planetary Reducers are designed and built for advanced high speed low backlash applications. The manufacturing processes allows us to offer exceptional shock load capacities and various mounting options.
Precision Planetary
Ratios from 3:1 through 100:1
Backlash to 1 ARC minute
Frame sizes from 42mm to 180mm
Inline and right angle units
DĖL PAPILDOMOS INFORMACIJOS - SUSISIEKITE SU MUMIS
built for the toughest industrial automation applications
World class gear manufacturing capabilities, quality material suppliers, and a state of the art quality process allows us to offer the highest level of precision, durability and endurance.
Our offered Planetary Reducers are designed and built for advanced high speed low backlash applications. The manufacturing processes allows us to offer exceptional shock load capacities and various mounting options.
Precision Planetary
Ratios from 3:1 through 100:1
Backlash to 1 ARC minute
Frame sizes from 42mm to 180mm
Inline and right angle units
DĖL PAPILDOMOS INFORMACIJOS - SUSISIEKITE SU MUMIS
+370 700 70 154 | miromax@miromax.lt
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Planetary gears
PRECISION PLANETARY REDUCERS
built for the toughest industrial automation applications
World class gear manufacturing capabilities, quality material suppliers, and a state of the art quality process allows us to offer the highest level of precision, durability and endurance.
Our offered Planetary Reducers are designed and built for advanced high speed low backlash applications. The manufacturing processes allows us to offer exceptional shock load capacities and various mounting options.
Precision Planetary
Ratios from 3:1 through 100:1
Backlash to 1 ARC minute
Frame sizes from 42mm to 180mm
Inline and right angle units
DĖL PAPILDOMOS INFORMACIJOS - SUSISIEKITE SU MUMIS
+370 700 70 154 | miromax@miromax.lt
Planetary gears
PRECISION PLANETARY REDUCERS
built for the toughest industrial automation applications
World class gear manufacturing capabilities, quality material suppliers, and a state of the art quality process allows us to offer the highest level of precision, durability and endurance.
Our offered Planetary Reducers are designed and built for advanced high speed low backlash applications. The manufacturing processes allows us to offer exceptional shock load capacities and various mounting options.
Precision Planetary
Ratios from 3:1 through 100:1
Backlash to 1 ARC minute
Frame sizes from 42mm to 180mm
Inline and right angle units
DĖL PAPILDOMOS INFORMACIJOS - SUSISIEKITE SU MUMIS
+370 700 70 154 | miromax@miromax.lt
This combination is impossible.
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Measure the wheel from top to bottom at the widest point, mounted and inflated. Section width is unknown in this mode, so only the diameter is drawn.
Only pitch and slip change the speed, not diameter or blades.
A displacement hull this long cannot exceed about 0 knots however much power is added. The figure below is what the propeller would deliver, not what the boat will do — it applies only to a hull that planes.
For inch-based motorcycle tyres, sidewall height is assumed equal to the tyre width, so outside diameter = rim + 2 × width.
Reference photo
2.Drive Input
Nm
: 1
RPM
Output Torque (on wheels)(on propeller shaft)260Nm
Wheel SpeedPropeller Speed615.4RPM
Drive unit
3.Results
Speed (km/h)72.0
Speed (m/s)20.0
Speed (mph)Speed (knots)44.8
Gear ratio, motor speed and the wheel size all have to be above zero before a speed can be worked out.Gear ratio, motor speed and the propeller pitch all have to be above zero before a speed can be worked out.
Speed is calculated from the entered values. Tyre deformation, slip and motor load are not included.Speed is calculated from pitch, gearing and the slip you entered. Hull resistance, load and gearbox losses are not included, so this is the speed the propeller would deliver in ideal conditions.
RPM
: 1
Category
Wheel Size (from tab)
Outside Diameter
Wheel RPM
Speed km/h
Speed m/s
Speed mph
CarFastest
195 / 55 R16
596.1 mm
615
69.1
19.2
42.9
ATV / UGVFastest
25 x 10 - 12
635.0 mm
615
73.6
20.4
45.7
Go-KartFastest
10 x 4.5 - 5
254.0 mm
615
29.4
8.2
18.3
MotorcycleFastest
90 / 100 - 12
484.8 mm
615
56.2
15.6
34.9
BicycleFastest
26 x 2.125
660.4 mm
615
76.6
21.3
47.6
Wheel sizes are taken from the current values of each category tab. Update the values in a tab to see the comparison change.
Reference photo
What each propeller figure does
Pitch is how far one turn would advance through solid water. Slip is the part of it the water gives back.
Field
Unit
Changes the speed?
Propeller Pitch
inch / mm
Yes — directly
Slip
%
Yes — directly
Gear Ratio
: 1
Yes — divides propeller RPM
Motor Speed
RPM
Yes
Propeller Diameter
inch
No — sets thrust and load
Blades
pcs
No — sets thrust and smoothness
Waterline Length
m
No — only checks the hull-speed ceiling
Why pitch and not diameter
A wheel travels one circumference per turn. A propeller travels its pitch — the distance it would advance through solid water in one revolution. Diameter decides how much water the blades can push, which is thrust; it does not change how far one turn carries the boat.
Why slip matters
Water is not solid, so the propeller always advances less than its pitch. That shortfall is slip, and ignoring it overstates the speed by 10–45%. Pick the hull type to load a typical figure, then adjust it if you know your own.
A hull that does not plane cannot outrun its own bow wave, whatever the propeller delivers. That ceiling is about 2.43 × √(waterline length in metres) knots. Enter the waterline length and the calculator will warn you when the propeller figure passes it.
POWER-TORQUE
Show Calculation Formulas
9,548.8 × Power (kW) / Speed (RPM)=Torque (N.m)
63,025 × Power (HP) / Speed (RPM)=Torque (lb.in)
Torque (N.m) × Speed (RPM) / 9,548.8=Power (kW)
Torque (lb.in) × Speed (RPM) / 63,025=Power (HP)
TORQUE FROM POWER
RPM
TORQUE
—
POWER FROM TORQUE
RPM
POWER
—
i
The calculated power is mechanical shaft power.
Motor and controller efficiency are not included.
Need help selecting a motor or controller?
Send us your required power, torque and RPM.
Our engineers will help you choose the right drive system
for your application.
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Planetary gears
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