Sicoma 0228G0001B2 Oil Seal 120×140×7.5 mm – MAO 3000/2000

• Application: SICOMA MAO 3000/2000 twin-shaft mixer shaft sealing group
• Dimensions (nominal): ID 120 mm × OD 140 mm × Width 7.5 mm
  • ID (Inner Diameter): 120 mm (shaft sleeve side)
  • OD (Outer Diameter): 140 mm (housing bore side)
  • Width: 7.5 mm (axial thickness)
• Material: NBR (Nitrile Rubber) — commonly compatible with standard bearing greases and mineral oils used in mixer bearing housings
• Outer surface design: Rubber-covered OD (if applicable) to improve static sealing in the bore and reduce corrosion risk
• Revision note: Seal profile and stack position can vary by mixer revision—confirm against your parts list/drawing before ordering.

0228G0001B2 oil seal typically sits in the 140 mm housing bore around the 120 mm shaft sleeve as a thin “barrier” element inside the shaft-end sealing stack.

The concept flow depends on revisions. The grease or bearing side links to 0228G0001B2, which is a thin oil seal. This connects to the main dynamic seal, whose profile may differ, and then leads to the interior of the mixer on the dust or slurry side.

It is important to check the exact stack order and seal types depend on your mixer revision. Use your BOM/exploded view to confirm the sealing version before ordering.

This sicoma spare parts is often sourced together with other shaft-end sealing items for Sicoma MAO 3000/2000 twin shaft concrete mixers—especially during preventive service or when contamination is suspected.

Common kit references (kit pages coming soon):

• MAO 3000/2000 Sealing Group Kit (full sealing refresh)

• MAO 3000/2000 Shaft Seal Service Kit (planned downtime service)

• MAO 3000/2000 Preventive Maintenance Kit (periodic reliability service)Kit content depends on the sealing version and mixer revision—send a photo/BOM and we’ll match the correct stack.

This oil seal also often ordered together (revision-dependent) with the following other Sicoma mixer spare parts as follows:

• PA084 Oil Seal
• PA051 Oil Seal
• PA102 U-Cup Seal
• 0228G0008L1 Sealing Cover

Sealing performance depends on the condition of the lip and the contact pressure it maintains against the shaft sleeve. When the lip wears, hardens, or gets damaged, the seal stops holding pressure evenly and the typical chain reaction begins:

• Grease containment weakens and lubrication can leak from the housing.

• Cement dust and fine abrasive slurry migrate toward the bearing zone.

• Contamination + lubrication loss accelerates bearing wear and may score the shaft surface.

• The result is higher temperature, faster bearing failure, and unplanned downtime.

Replacing the seal on time with an OEM-equivalent part helps protect bearing life and reduces stop-start maintenance in demanding ready-mix and precast operations.

This 120×140×7.5 mm NBR oil seal (0228G0001B2) is used on specific SICOMA MAO 3000/2000 mixer revisions that comes with a 120 mm shaft sleeve diameter, and a 140 mm housing bore.

• 0228G0001B2: Oil seal — 120×140×7.5 mm. This is the reference part for comparison. Key dimensions: OD 140 mm, width 7.5 mm.

• PA084: Oil seal — typically 120×160×13 mm. Not interchangeable with 0228G0001B2. Reason: OD is 160 mm (not 140 mm) and width is 13 mm (not 7.5 mm).

• PA051: Oil seal — revision/BOM dependent (do not assume a single fixed size). Do not treat it as interchangeable with 0228G0001B2. Always verify using the exact code + BOM/drawing.

• PA102: U-cup seal / U-cup oil seal — revision/BOM dependent. Not interchangeable with 0228G0001B2 because it is a different seal type/profile. Verify the seal type/profile + BOM.

Before ordering, it is benefical to confirm:

• Housing bore diameter (140 mm vs 160 mm) with calipers

• OEM code stamped on the old seal

• your mixer’s parts list/drawing (revision confirmation)

• Seal seating: The oil seal has to sit square and flush inside the 140 mm housing bore with no gaps or tilting.
• Bore preparation: The bore must be smooth, clean, and free from rust, burrs, or damage to avoid cutting the outer rubber layer and to ensure reliable static sealing.
• Initial lubrication: Apply clean grease to both the shaft surface and the seal lip before start-up to prevent dry running and immediate lip damage.
• For critical applications and high-duty mixer lines, installation and inspection of the Sicoma 0228G0001B2 oil seal should be carried out by a qualified maintenance technician familiar with SICOMA twin-shaft mixer shaft sealing groups.

• In stock: typical dispatch 3–7 business days

• Made-to-order: usually 4–6 weeks after advance payment/confirmation

Some items may be in transit—please confirm lead time before ordering.

All quotations and proforma invoices for this item are issued in EURO (EUR). Please request a formal offer for current pricing.

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.

Send quantity + delivery country + mixer revision/serial (if available), then choose a channel from the below so we can confirm fitment and quote accurately:

• RFQ form: Use the form below for a standard request (model, quantity, destination).
• Email: Send your RFQ with your spare parts list and company details.
• WhatsApp (fast checks): Best for urgent availability checks or quick fitment questions.
• Contact page: Recommended for mixed-brand lists or multiple items in one enquiry.

What happens next:

We confirm stock and lead time, verify fitment for your revision, then send a tailored offer for your project and destination.