1294 Dunbier H3942 Mackay Knott Swing-Up Jockey Wheel Heavy-Duty TK57-210/75m | Marine Trailer Part
1294 Dunbier H3942 Mackay Knott Swing-Up Jockey Wheel Heavy-Duty TK57-210/75m | Marine Trailer Part
Couldn't load pickup availability
✓ Authorised Volvo Penta Dealer · Marine & auto specialists · Ships Australia-wide
🔧 Product Description
Dunbier Knott TK57 Heavy-Duty Side-Wind Swing-Up Jockey Wheel 210 × 75mm – Part Number: 1294
A premium heavy-duty Knott TK57 swing-up jockey wheel with a broad 210 × 75mm wheel for improved support on softer surfaces. Dunbier and Mackay catalogue a 545kg capacity and 255mm lift height; current Knott TK57 versions may be marked 500kg static load, so the supplied unit's rating governs.
⚙️ Key Features
- Knott TK57 side-wind mechanism
- Wide 210 × 75mm wheel
- Swing-up travel bracket
- Galvanised finish for marine trailer use
- Broad wheel reduces ground pressure compared with the 50mm version
📏 Specifications
- Catalogue capacity: 545kg Dunbier/Mackay
- Current Knott family static rating may be 500kg depending version
- Lift height: Approximately 255mm
- Wheel size: 210 × 75mm
- Outer tube diameter: TK57 57mm family
🔄 Cross Reference & Related Parts
- Dunbier: 1294
- Mackay: H3942
- Knott family: TK57 Premium
- Replacement handle: Dunbier 1295
- Replacement wheel: Dunbier 1296
- Replacement cap: Dunbier 1291
- Related gear components: Dunbier 1280, 1301 and 1302 where compatible
🚤 Trailer Compatibility & Application
- Suitable for medium and heavy trailers within the permanent rating
- Wide wheel is useful on gravel, compacted dirt and uneven launch areas
- Confirm sufficient clearance for the 75mm wheel when swung up
🔌 Function
Supports and height-adjusts the trailer drawbar and assists manual positioning on firm surfaces.
⚠️ Common Signs of Failure
- Wheel hub or tread is damaged
- Handle gear skips under load
- Swing lock is loose
- Tube bends or develops excessive play
- Grease is contaminated by water because the cap is missing
🛠️ Installation & Safety
- Mount to a structurally sound drawbar with correct hardware
- Use wheel chocks before uncoupling
- Retract and lock the assembly before road travel
- Maintain screw and gear lubrication
- Do not use as an axle jack or permanent support stand
📦 Condition
- Brand new Dunbier Marine Products trailer component
- Supplied as one complete Knott TK57 210 × 75mm heavy-duty jockey wheel
- Supplied in original or equivalent packaging
Shipping & Delivery
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
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?
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.
Share
