• 1778 Dunbier Bearing Protectors Pair Suits Trojan 2.2t Axle | Marine Trailer Part
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1778 Dunbier Bearing Protectors Pair Suits Trojan 2.2t Axle | Marine Trailer Part

1778 Dunbier Bearing Protectors Pair Suits Trojan 2.2t Axle | Marine Trailer Part

$114.50 AUD
$114.50 AUD
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✓ Authorised Volvo Penta Dealer · Marine & auto specialists · Ships Australia-wide

🔧 Product Description

Dunbier Bearing Protectors for Trojan 2.2-Tonne Axles – Part Number: 1778

A spring-loaded grease reservoir and hub protector set for Trojan 65mm square 2.2-tonne hubs. The moving piston maintains light positive grease pressure as the hub cools after immersion, helping reduce the tendency for water to be drawn past the inner seal.

⚙️ Key Features

  • Spring-loaded grease-pressure piston
  • Grease nipple allows replenishment without removing the hub
  • Pair services one axle
  • Protective plated or manufacturer finish
  • Useful for boat trailers exposed to repeated immersion

📏 Specifications

  • Compatibility: Trojan 65mm square 2.2-tonne hubs
  • Reference: Trojan-specific hub bore
  • Quantity: Pair
  • Press-fit hub-bore dimensions must match exactly
  • Does not replace the need for correctly adjusted bearings and sound inner seals

🔄 Cross Reference & Related Parts

  • Dunbier: 1778
  • Related PVC protector covers: Dunbier 1782
  • Dust-cap alternative: Dunbier 1740/1740P
  • Use only a protector with the correct measured hub bore

🚤 Trailer Compatibility & Application

  • Suits Trojan 65mm square 2.2-tonne hubs
  • Compatible with braked or non-braked hubs only where the cap bore and internal clearance match
  • The LandCruiser and Trojan versions are not direct substitutes for standard hub protectors

🔌 Function

Maintains a small reserve of grease and slight positive pressure at the outer hub to help protect bearings from water entry.

⚠️ Common Signs of Failure

  • Protector is loose in the hub bore
  • Piston remains fully extended or will not move
  • Grease leaks excessively around the outer edge
  • Grease nipple is blocked or damaged
  • Corrosion, dents or spring failure

🛠️ Installation & Safety

  • Measure the clean hub bore before fitting
  • Drive the protector in squarely using a suitable block or driver
  • Fill gradually until the piston reaches the indicated operating position
  • Do not over-pressurise the hub, which can force grease past the inner seal
  • Inspect and service wheel bearings at normal intervals

📦 Condition

  • Genuine Dunbier Marine Products trailer component
  • Brand new
  • Supplied as one pair of bearing protectors
  • Supplied in original or equivalent packaging

Shipping & Delivery

Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.

Returns & Warranty

14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in new, unused condition for a refund or exchange. Manufacturer warranties apply to new parts. Full details in our Refunds & Returns policy.

Not sure this fits?

Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.

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