Sicoma MOB08 Steel Bush 111.6×120×120 mm – MAO 3000/2000
Function: Sicoma MOB08 steel bush 111.6×120×120 mm for SICOMA MAO 3000/2000 twin-shaft mixers
The Sicoma MOB08 steel bush is an OEM equivalent Conspar spare part compatible with Sicoma MOB08 shaft bushings for SICOMA MAO 3000/2000 twin-shaft concrete mixers. It is not an original Sicoma-branded component.
This OEM equivalent MOB08 steel bush is a precision-machined intermediate bushing, which is one of the vital Sicoma mixer spare parts in the maintenance of inventories for high-volume concrete production. Functioning as a sacrificial shield, the MOB08 is a thin-walled steel liner designed to establish a renewable friction surface on the main shaft of SICOMA MAO twin-shaft mixers.
By fitting precisely over the main shaft, the Sicoma MOB08 steel bush provides the smooth, hardened ground necessary for the operation of dynamic sealing elements (lip seals and U-cup seals) used in batching plant mixers. Its primary engineering goal is to isolate seal friction wear away from the expensive main shaft, protecting the crucial interface where the mixer body meets the rotating assembly.
For maintenance teams and distributors, the MOB08 steel bush is a core spare part for Sicoma MAO 3000/2000 mixers within Conspar’s OEM equivalent concrete mixer spare parts range.
Specs of MOB08 Steel Bush:
Part code: MOB08
Application: SICOMA MAO 3000/2000 twin-shaft concrete mixer
Inner diameter (ID): 111.6 mm
Outer diameter (OD): 120 mm
Height (H): 120 mm
Wall thickness (t): 4.2 mm
Material: Steel with heat-treated surface
Weight: 1.1 kg
Other names used for this Sicoma mixer spare part: Sicoma MOB08, Sicoma Steel bushMOB08, MOB08 and Steel Bush MOB08.
Abbreviations:
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ID / OD: Inner Diameter / Outer Diameter
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t: Wall thickness
Why Replacing Sicoma MOB08 Steel Bush Matters?
The MOB08 steel bush acts as the running track for shaft seals in the SICOMA MAO sealing group. Once the surface wears, gets scratched, or falls out of tolerance:
- Seal lip contact with the surface becomes uneven or is lost.
- Grease or oil can leak towards the concrete side of the mixer.
- Cement slurry and fine abrasive particles migrate into the bearing area.
- Excessive seal wear and early bearing damage may cause permanent corrosion and scoring on the main shaft surface.
Replacing the Sicoma MOB08 steel bush with an OEM equivalent Conspar spare part before this stage helps safeguard more expensive Sicoma mixer spare parts and reduces the chance of prolonged downtime during major repairs in high-volume ready-mix plants.
Compatibility of MOB08 Steel Bush:
The MOB08 steel bush is designed for SICOMA MAO 3000/2000 twin-shaft concrete mixers that use a 111.6 mm shaft sleeve and 120 mm seal running diameter. These dimensions are specific to larger-frame MAO models and upgrades with increased shaft diameter.
- Concrete mixer context: Typically installed on heavy-duty Sicoma twin-shaft mixers in high-volume ready-mix concrete batching plants.
- System role: Works together with oil seals and U-cup seals (for example PA084 or PA102) and other concrete mixer spare parts in the shaft sealing group.
- To confirm compatibility, the shaft diameter (≈111.6 mm) and the outer diameter where seals run (120 mm) should be checked with calipers and compared with your OEM parts list and Sicoma MOB08 documentation.
Installation Notes for MOB08 Steel Bush:
Shaft preparation: The main shaft surface must be cleaned of rust, burrs, and old adhesive before fitting the MOB08 steel bush. Any raised defects can deform the thin-walled sleeve.
- Fitting technique: The Sicoma MOB08 steel bush combines a slight interference fit with a delicate geometry. It should be pressed on carefully and evenly, avoiding local hammer impacts that could ovalise the sleeve.
- Interaction with seals: Oil seals and U-cup seals (such as PA084 or PA102) run directly on the outer surface of the MOB08 steel bush. During assembly, lubricate the sleeve with clean grease to prevent cutting the seal lips on sharp edges.
- System integration: The locking unit (e.g., MOSACOM) must be correctly engaged to drive the sleeve and hold it axially in place, and the yellow wiper ring (0529G0006B1) should be aligned so the bushing passes concentrically through it.
For critical applications, installation and inspection should be carried out by a qualified maintenance technician familiar with SICOMA twin-shaft mixer sealing groups.
Delivery Time:
- If the product is not in stock, it is delivered to order, usually within 4-6 weeks after making an advance payment.
- Some items may be in transit, so checking the delivery time before ordering is recommended.
Commercial Note:
All quotations and proforma invoices for this item are issued in EURO (EUR). Please request a formal offer for current pricing of the MOB08 steel bush.
Legal Notice – Compatibility and Trademarks
Sicoma is a registered trademark of its respective owner. This spare part is an OEM equivalent component manufactured and supplied by Conspar and is not an original Sicoma-branded product. All references to “Sicoma”, mixer models and OEM codes are used solely to indicate compatibility and correct fitment within the concrete mixer system.