1FT6 synchronous motor with mounted planetary gearbox series SP+

1FT6 motors can be combined with planetary gearboxes to compact coaxial drive units. The gearboxes are flanged directly to the drive end of the motors.

When selecting the gearbox, ensure that its maximum permissible input speed is not exceeded by the maximum speed of the motor. In the case of high operating frequencies, allowance must be made for the factor f₂ (see Configuration Manual, "Synchronous motors"). The frictional losses of the gearbox must always be taken into account.

The gearboxes are only available in non-balanced design.

• High efficiency
  Single-stage: > 97 %
  2-stage: > 94 %
• Minimum torsional backlash
  Single-stage: ≤ 4 arcmin
  2-stage: ≤ 6 arcmin
• Power transmission from the central sun wheel via planet wheels
• No shaft deflections in the planet wheel set due to symmetrical force distribution
• Very low moment of inertia and thus short acceleration times of the motors
• Output shaft bearings dimensioned for high cantilever and axial loads with preloaded tapered-roller bearings
• The gearboxes are connected to the motor shaft via an integrated clamping hub. A plain motor shaft extension is necessary for this purpose. Shaft and flange accuracy tolerance N in accordance with DIN 42955 and vibration magnitude grade A in accordance with EN 60034-14 are sufficient. The motor flange is adapted by means of adapter plates.
• Output shaft of gearbox exactly coaxial with the motor
• The gearboxes are enclosed (seal between gearbox and motor) and filled with oil at the factory. They are lubricated and sealed for their service life.
  The gearboxes are suitable for all mounting positions.
• Degree of protection of gearbox: IP65
• Small dimensions
• Low weight

1FT602 to 1FT613 motors can be supplied ex factory (Siemens AG) complete with flange-mounted planetary gearbox.

The gearboxes assigned to the individual motors and gear ratios i available for these motor/gearbox combinations are listed in the selection table. When making a selection, note the maximum permissible input speed of the gearbox, which should be equal or higher to the maximum motor speed.

The motor/gearbox combinations listed in the selection tables are mainly intended for cycle operation S3-60 % (ON time ≤ 60 % and ≤ 20 min). Reduced maximum motor speeds and output torques apply for use in S1 continuous duty (ON time > 60 % or > 20 min). The gearbox temperature must not exceed 90 °C (194 °F).

Follow the instructions contained in the Configuration Manual for synchronous motors when assigning gearboxes to the motor.

1FT6 motors must be designed with plain motor shaft extension, shaft and flange accuracy tolerance N and vibration magnitude grade A/degree of protection IP65 (for 1FT602: IP64) for mounting onto the gearbox.

1FT7 servomotors

1FT7 motor with mounted series SP+ planetary gearbox

1FT7 motors can be combined with planetary gearboxes to form compact coaxial drive units. The gearboxes are flanged directly to the drive end of the motors.

When selecting the gearbox, ensure that its maximum permissible input speed is not exceeded by the maximum speed of the motor. In the case of high operating frequencies, allowance must be made for the factor f₂ (see Configuration Manual for 1FT7 synchronous motors). The frictional losses of the gearbox must always be taken into account.

The gearboxes are only available in non-balanced design.

• High efficiency
  Single-stage: > 97 %
  Two-stage: > 94 %
• Minimum torsional backlash
  Single-stage: ≤ 4 arcmin
  Two-stage: ≤ 6 arcmin
• Power transmission from the central sun wheel via planet wheels
• No shaft deflections in the planet wheel set due to symmetrical force distribution
• Very low moment of inertia and thus short acceleration times of the motors
• Output shaft bearings dimensioned for high cantilever and axial loads with preloaded tapered-roller bearings
• The gearboxes are connected to the motor shaft via an integrated clamping hub. A plain motor shaft extension is necessary for this purpose. Shaft and flange accuracy tolerance N in accordance with DIN 42955 and vibration magnitude grade A in accordance with EN 60034-14 are sufficient. The motor flange is adapted by means of adapter plates.
• Output shaft of gearbox exactly coaxial with the motor
• The gearboxes are enclosed (seal between gearbox and motor) and filled with oil at the factory. They are lubricated and sealed for their service life. The gearboxes are suitable for all mounting positions.
• Degree of protection of gearbox: IP65
• Small dimensions
• Low weight

1FT703 to 1FT710 naturally-cooled motors can be supplied ex factory (Siemens AG) complete with flange-mounted planetary gear unit.

The gearboxes assigned to the individual motors and gear ratios i available for these motor/gearbox combinations are listed in the selection table below. When making a selection, note the maximum permissible input speed of the gearbox (this is the same as the maximum motor speed).

The motor/gearbox combinations listed in the selection tables are mainly intended for cycle operation S3-60 % (ON time ≤ 60 % and ≤ 20 min). Reduced maximum motor speeds and output torques apply for use in S1 continuous duty (ON time > 60 % or > 20 min). The gearbox temperature may not exceed 90 °C (194 °F).

Follow the instructions contained in the Configuration Manual for 1FT7 synchronous motors when assigning gearboxes to the motor.

Preconditions:

With the following motor versions, SP+ planetary gearboxes can be mounted:

• Flange 1
• Plain motor shaft extension, shaft and flange accuracy tolerance N, without/with holding brake
• Vibration magnitude grade A/IP65 degree of protection

SP+ planetary gearbox can therefore only be ordered with these 1FT7 motors:

1FT7...-5..71-..G1

1FT7...-5..71-..H1

1FT7...-7..71-..G1

1FT7...-7..71-..H1