Centerline 55T Hydraulic Detachable Neck Lowbed

Centerline hydraulic detachable neck lowboy in Edmonton

Centerline 55T Hydraulic Detachable Neck Lowbed

The Centerline 55T Hydraulic Detachable Gooseneck Lowbed trailer is an attractive option for operators who need a front loading trailer and don’t want to spend a lot of time detaching and attaching the gooseneck. The hydraulic detachable gooseneck is both quicker and safer to remove over a mechanical detachable gooseneck, particularly on rough, uneven, or wet terrain.

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Trailer Features

Hydraulic Neck

Ease of the hydraulic detachable gooseneck connection makes it the choice among operator’s.

Neck Extensions

If you need to increase your payload, this trailer comes standard equipped with a pin on flip over neck extension for use with a tandem jeep.

Front Ramps

Tapered ramps mounted on front of deck crossmember for ease of loading when neck is removed.

Shallow Neck

A shallow drop neck provides greater versatility by having more ground clearance than a double drop and a lower deck height than a single drop.


We use a 30” wide bolster that has a QT100 3/8” top plate for added strength when loading equipment onto the trailer.


Full width beavertails with traction bars and QT100 3/8” top plates, makes loading equipment onto the deck very easy.

Model SD55T-HG-3
Folding Gooseneck Capacity 55 ton distributed evenly over 15' deck
Width 10'0"
Length 55’8” w/o extension, 62’0” with extension
Main Deck Length 24’0”
Rear Frame Length 17’4”
Deck Height 36” unladen
Ground Clearance 18”
Gooseneck Narrow hydraulic gooseneck with (1) king pin position for use on a tandem axle tractor, Hydraulic flip over neck extension for use with a tandem axle jeep, Hydraulic adjustable gooseneck to lower and raise main deck or adjust king pin, Hydraulic actuated arm assembly to support gooseneck when detached, Electric start Honda 13 hp hydraulic power pack mounted in the gooseneck, 3/16” aluminum checker plate fenders mounted on main deck
Main Frame All fabricated QT100 mainframe design c/w selective lightening holes
Crossmembers Main deck W10 @ 12lb wide flange I beam crossmembers @ 24” spacing
Front Ramps Tapered ramps on front deck of crossmember
Landing Gear Lightweight flip back dolly legs - for parking empty trailer only
Deck Material 3” rough fir decking on main deck
Bolsters Half bolsters in front of 1st axle tires for easy transition onto main deck, Full width, 30” wide bolsters c/w QT-100-3/8” top plate & cutaway center to nestle boom
Beavertail Full width beavertail, QT-100-3/8” top plate & 1” grouser bars spaced at 10” o.c., Provisions for single axle fish mouth common air booster
Wide Load Wide load D-sign mounted in front side of rear light panel, Wide load flag pockets mounted on front side of beavertail, Wide load flap pockets mounted on outside edge of swingout lights
Chain Pockets H/D chain pockets opposite each crossmember on main deck, (3) pair chain pockets installed on gooseneck side webb, Chain pockets mounted on bolster underside ends & beavertail side rail
Load Winches (5) three bar winches spaced along main deck side rails c/w J hooks opposite
Suspension (3) 30,000 lb. air ride suspension @ 60” axle spacing, Air scale & manual dump valve in enclosed box at rear side rail, Replaceable jerk chains installed on all axles
Axles (3) 25,000 lb. @ 93’5” track width (10’0” wide over tires), 5/8” wall axles on 1st and 2nd and 3/4” wall axle on 3rd
Brakes Quick change 16 ½ x 7 brake blocks & enclosed cam tubes, Automatic slack adjusters and parking brakes on (3) axles
Hubs/Drums 10 stud steel piloted hubs and cast outboard drums
Wheels 10 stud pilot mounted steel disc 8.25” x 22.5” wheels - silver
Tires 275/70R-22.5 on/off road radial tires
Lighting Integrated wiring harness with seven pin female receptacles, LED rubber mounted sealed beam lighting system, (2) pair swing out wide load lights at front and rear deck of lowbed, (2) amber strobe lights mounted in beavertail cross pipe c/w switch in dump valve cabinet
Finish Sandblasted, Epoxy Primer & PPG Urethane Paint - Black or Grey
Safety Stripe Applied as per regulation
Document Holder Mounted on Webb of Gooseneck
Warranty 1st year – 100% parts & labour, 2nd year – 50% parts & labour, 3rd to 5th year – 50% parts only
  • Available in different main rail profiles, widths & lengths
  • Available in 40-120 ton main frame capacities
  • Single or double drop neck profiles
  • Rear deck pin joint for deck extensions and adjusting camber
  • Tuff-Lift axle lift system (+)
  • Electric start hydraulic power pack mounted in the gooseneck
  • Hydraulic actuated flip-over linkage on gooseneck extension
  • Collapsible adjustable boom stand mountain in boom trough
  • Available in different tire and rim combinations

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