Description
SAACKE FSM 006A64 | Boiler Burner Servo Actuator
Dynamic Product Introduction
The SAACKE FSM 006A64 is a burner actuator where mechanical positioning accuracy directly affects combustion behavior. This is not a generic industrial motor that can be selected by voltage and power alone. The actuator has to move the associated burner-control mechanism through the required angular range at the specified operating speed while remaining compatible with the SAACKE combustion system.
A published procurement specification for SAACKE boiler-burner spare parts identifies FSM 006A64 specifically and lists a 230 VAC power supply, 5.9 kW rating, 6 Nm torque, 64 seconds per 90° positioning time, and 50 Hz.
That 64-second positioning figure is particularly useful in field replacement work. A faster actuator is not automatically an upgrade. In a burner system, changing the actuator’s travel speed can alter how quickly the combustion-air or fuel-control mechanism responds to a command. The control loop was engineered around a particular actuator characteristic.
The FSM 006A64 also needs to be distinguished from other SAACKE FSM models. The same procurement documentation lists the FSM 025B88 separately, with different torque and positioning characteristics.
That is a strong reason to match the complete model rather than sourcing by the generic “FSM” designation.
FSM 006A64
Key Technical Specifications
- Manufacturer: SAACKE
- Model: FSM 006A64
- Product Type: Burner servo actuator / servo motor
- Application: SAACKE boiler burner
- Power Supply: 230 VAC
- Power Rating: 5.9 kW
- Torque: 6 Nm
- Positioning Time: 64 seconds / 90°
- Frequency: 50 Hz
- Application Category: Industrial combustion and boiler-burner control
- Primary Function: Controlled positioning of burner-related mechanical components
- Replacement Basis: Exact model and mechanical/electrical compatibility should be verified before installation
The 230 VAC, 5.9 kW, 6 Nm, 64 seconds/90°, and 50 Hz values are supported by the published SAACKE boiler-burner spare-parts specification.
Important Specification Boundary
Several reseller pages describe the FSM 006A64 as a generic “industrial control module,” while others describe it as a servo motor and publish incompatible electrical and environmental figures. Those descriptions should not be mixed together.
For procurement purposes, the defensible specification set is the one tied directly to the SAACKE boiler burner reference:
230 VAC / 5.9 kW / 6 Nm / 64 seconds per 90° / 50 Hz.
Do not add IP65/IP67, Modbus, 24 VDC, 4–20 mA, or specific encoder details unless the physical nameplate or applicable SAACKE documentation confirms them.
Global Sourcing & Live-Test SOP
Inbound Verification
The first inspection should establish that the unit is actually the required FSM 006A64.
Record:
- Complete model marking
- SAACKE identification
- Serial number
- Date or revision information
- Voltage/frequency marking
- Motor/actuator rating
- Shaft or mechanical interface
- Connector arrangement
- Mounting pattern
- Condition of the housing
- Signs of overheating or previous repair
Do not accept an FSM 025B88 or another FSM variant simply because it appears mechanically similar.
The published procurement data clearly differentiates FSM 006A64 from FSM 025B88 by torque and positioning characteristics.
Mechanical Verification
Before electrical testing, verify the actuator’s mechanical relationship with the burner.
Check:
- Mounting points.
- Output shaft/coupling.
- Mechanical travel.
- 90-degree operating range.
- End-stop condition.
- Linkage condition.
- Signs of shaft binding.
- Gearbox backlash.
- Coupling wear.
- Alignment with the burner mechanism.
A perfectly functional actuator can still be unusable if its shaft geometry or mounting arrangement does not match the installed burner.
Live Simulation
Testing should be performed using the correct SAACKE burner test arrangement or an appropriate engineering fixture.
A sensible sequence is:
- Inspect insulation and terminals.
- Verify the nameplate voltage and frequency.
- Check winding/drive electrical condition before energization.
- Confirm mechanical freedom of movement.
- Energize using appropriate protection.
- Observe startup behavior.
- Command controlled movement.
- Verify the expected angular travel.
- Measure the travel time through the specified range.
- Check torque response and abnormal noise.
- Repeat the cycle after thermal stabilization.
For the FSM 006A64, the documented 64 seconds/90° figure gives the engineer a useful acceptance reference during functional testing.
Diagnostics
During QC, document:
- Starting condition
- Rotation direction
- 90-degree travel
- Travel time
- Motor current
- Mechanical noise
- Vibration
- Temperature rise
- End-stop behavior
- Coupling/backlash condition
A clamp meter and calibrated multimeter can provide useful electrical checks, while a stopwatch or tachometer can verify the actuator’s positioning behavior.
Do not evaluate the unit only by whether it “runs.” A burner actuator that runs but travels too quickly, slowly, or inconsistently can still be unsuitable.
Final Preparation
Before shipment:
- Photograph the complete nameplate.
- Record measured travel time.
- Protect the shaft and coupling.
- Secure moving components.
- Use suitable shock protection.
- Keep electrical terminals protected from contamination.
- Document whether the unit was dynamically tested.
For a combustion-system spare, the test record should follow the actuator.
Field Engineer’s Pitfall Guide
❗ Do not substitute by voltage alone
A 230 VAC actuator is not automatically an acceptable substitute for the FSM 006A64.
The documented combination of 6 Nm torque and 64 seconds/90° is part of the actuator’s operating behavior.
A replacement with substantially different speed or torque can change burner-control dynamics even if the voltage appears correct.
❗ Do not confuse FSM 006A64 with FSM 025B88
This is an easy procurement mistake.
The published SAACKE burner spare specification identifies the FSM 025B88 separately at 25 Nm and 88 seconds/120°, while the FSM 006A64 is specified at 6 Nm and 64 seconds/90°.
Those are not minor variations.
They represent different mechanical operating characteristics.
❗ Verify the burner linkage before declaring the actuator defective
If a replacement FSM 006A64 stalls or fails to reach its commanded position, do not immediately condemn the motor.
Check the mechanical linkage, damper, valve, coupling, and end stops first.
Combustion mechanisms accumulate heat, carbon deposits, corrosion, and mechanical wear. A binding damper can make a healthy actuator look electrically defective.
Intent-Driven FAQ
What is the SAACKE FSM 006A64?
The SAACKE FSM 006A64 is a servo actuator/motor used with a SAACKE boiler burner. A published equipment-spares specification explicitly identifies the part for a SAACKE boiler burner.
What is the power rating of FSM 006A64?
The published specification gives 5.9 kW with a 230 VAC, 50 Hz supply.
What is the torque rating?
The documented torque is 6 Nm.
How fast does FSM 006A64 move?
The published specification gives a positioning time of 64 seconds for 90°.
This is an important replacement parameter because actuator speed can affect burner-control response.
