Sicoma PA051 Oil Seal 105×130×13 mm – MAO 3000/2000
Function: Sicoma PA051 seal 105×130×13 mm oil seal for SICOMA MAO 3000/2000 mixers
The Sicoma PA051 oil seal is an OEM equivalent Conspar spare part compatible with Sicoma PA051 seals for SICOMA MAO 3000/2000 twin-shaft concrete mixers. It is not an original Sicoma-branded component. This PA051 TC double-lip rotary shaft seal manages the interface between the rotating shaft and the stationary housing in the SICOMA MAO mixer bearing assembly. Used on mixers with a 105 mm shaft system, the Sicoma PA051 seal is a key protective component for ready-mix concrete batching plants that need stable, continuous operation.
The PA051 seal uses a strong double-lip TC design to create a two-level protection system: the primary lip keeps lubrication inside the bearing housing, while the secondary lip blocks harsh concrete slurry and fine particles. For maintenance teams and distributors, this OEM equivalent PA051 oil seal is a dependable concrete mixer spare part that helps extend the life of precision bearing components and reduces unexpected downtime in stationary concrete batching plants.
Specs of PA051 Oil Seal 105×130×13 mm:
Application: SICOMA MAO twin-shaft concrete mixers (specific models with 105 mm shaft sleeves) as part of Conspar’s OEM equivalent Sicoma mixer spare parts range.
- Nominal dimensions: 105×130×13 mm
- Inner Diameter (ID): 105 mm
- Outer Diameter (OD): 130 mm
- Thickness: 13 mm
- Type: TC (spring-loaded, double-lip, metal-cased rotary shaft seal)
- Material: NBR (Nitrile Rubber) – industrial-standard resistance used in concrete mixer bearing housings
- Product type: Rotary shaft oil seal
- Weight: 0.091 kg
Other names used for this Sicoma mixer spare part: Sicoma PA051 seal; Sicoma seal PA051; PA051 oil seal; PA051 seal.
Abbreviations: TC double-lip seal, NBR material
TC: Rubber-coated double-lip rotary shaft seal design
NBR: Nitrile rubber compound commonly used in concrete mixer bearing housings
ID / OD: Inner Diameter / Outer Diameter
Why PA051 Oil Seal Replacement Prevents Failures?:
The performance of a shaft seal depends on how elastic the lips are and how much contact pressure they maintain. When the sealing edge of the PA051 seal wears out or its profile changes, several problems can occur:
- Grease may start leaking out of the housing, causing the bearings to become drier over time.
- Harsh materials like cement slurry and fine particles can enter the bearing area.
- Friction and heat rise, which leads to faster wear on the main bearing and scratches on the shaft sleeve.
In practice, ignoring a worn Sicoma PA051 seal often leads to a complete bearing group overhaul and extended downtime for the SICOMA twin-shaft mixer. Replacing the PA051 oil seal on time with an OEM equivalent Conspar spare part helps protect bearings and shaft sleeves and keeps concrete batching operations running reliably.
Compatibility: PA051 Seal for SICOMA MAO 3000/2000
The PA051 seal is designed specifically for SICOMA MAO series mixers with a shaft sleeve diameter of 105 mm and a housing bore of 130 mm.
It is important not to confuse PA051 with PA084 or 0228G… series oil seals, which are used on models with a 120 mm shaft sleeve.
To confirm compatibility, the shaft diameter (105 mm) and the housing bore (130 mm) should be measured with calipers and compared with your OEM parts list and Sicoma PA051 documentation.
Installation: Fitting the PA051 TC Seal Correctly
- Before pressing the seal in, make sure the bore is clean, smooth and free from burrs or damage.
- Press the PA051 seal in by its outer metal case and keep it square to the housing. Avoid hitting the sealing lip directly; otherwise, the profile can deform before the mixer even starts.
- Dry rubber can burn upon initial start-up. To protect the PA051 TC seal during the break-in period, it is essential to apply clean grease to both the lip and the shaft surface before commissioning.
- For critical applications, installation 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 and lead times of the PA051 oil seal.
Legal Notice – Compatibility and Trademarks
Sicoma is a registered trademark of its respective owner. This spare part is an OEM equivalent component 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.