Connecting Joint 123×151×35 mm – SICOMA MAO 3000/2000 – MOSAP9

Connecting Joint MOSAP9 is an essential sicoma spare part for ensuring shaft stability in high-volume concrete production, this heat-treated steel ring is the integral "force equalizer" of the MOSACOM shaft locking assembly.  It has designed specifically for SICOMA S.r.l. MAO 3000/2000 twin-shaft concrete mixers, the MOSAP9 acts as a critical load distributor and spacer between the support ring and the clamping element.

The engineering function involves distributing the axial force from the mounting screws along the locking device's circumference. This helps the unit hold onto the shaft and avoiding any bending or misalignment during demanding work in the batching plant operations.

Technical snapshot:

• Part code: MOSAP9
• Application: MOSACOM Locking Group of SICOMA MAO 3000/2000
• Dimensions: 123×151×35 mm
• Inner Diameter (ID): 123 mm
• Outer Diameter (OD): 151 mm
• Height: 35 mm
• Weight: 0.6 kg
• Material: Heat-treated steel
• Position: Structural mid-point of the locking group.

Abbreviations:

• ID / OD: Inner Diameter / Outer Diameter

Why replacement matters?:

Any wear, cracks, or deformation in the MOSAP9 can disrupt this balance and may create some of the following effects:

• The locking device grips the shaft unevenly or loosens entirely.
• Shaft runout (wobbling) begins immediately.
• Misalignment of the sealing elements leads to concrete slurry leakage.
• Ultimately, this causes severe damage to the mixer shaft and bearing assembly.

What to check before ordering:

This ring belongs to the large-frame Sicoma twin shaft mixer spare parts family (MAO 2250/3000) using the MOSACOM shaft group.

• System Integration: It forms a functional set with the MOSAP10 Support and the locking unit.
• Critical Dimension: Fitment guarantees depend on one number: the 123 mm ID.
• Recommendation: Using caliper checks and the mixer serial number to prove compatibility before ordering.

Installation notes:

Radial force generation depends on connection density and precision, Hence, the following topics are advised to be considered while mounting the MOSAP09:

• Hardware: A full complement of hardware (9x VB093 screws) is mandatory. This multi-point array is the trigger for the locking unit.
• Torque: Any missing or loose fastener allows the flange to flex, disabling the lock immediately and risking shaft slippage.
• Alignment: The installation requires precise alignment with the MOSAP10 support ring.
• For critical maintenance, installation should be performed by a qualified technician.