Trailer Focus: Refrigerated

Updated May 7, 2010

Trailer Focus: Refrigerated

Compared to dry-van trailers, refrigerated trailers offer more to consider when spec’ing – the type and density of foam insulation, duct design and UV-resistant roofs, just to name a few. As today’s transportation refrigerated unit manufacturers introduce models with higher operating efficiencies and lower fuel consumption, trailer manufacturers are offering improved insulation and heat isolation on their refrigerated products, resulting in lower TRU operating costs and greater savings for refrigerated carriers.

The following are standard or typical specifications for popular 53-foot refrigerated trailers marketed by leading suppliers.

Great Dane1GREAT DANE — Classic truckload refrigerated

Floor: 1.38-inch medium-duty aluminum duct for maximum air return; flush rear gutter; four drains

Crossmember: Front – 4-inch aluminum I-beam; bay area – 5-inch-deep aluminum I-beam; side area – 4-inch-deep steel I-beam; all on 12-inch centers

Suspension: Hendrickson HKANT40K 49-inch spread tandem slide

Brakes: 16.5-by-7-inch extended service linings

Sidewalls: 1.13-inch aluminum J upright on 12- and 24-inch centers; 0.04-inch corrugated aluminum side sheets

Lining: 0.06-inch high-glass-content flat white fiberglass lining

Rear frame: Stainless steel

Rear doors: Aluminum frame swing with triple-seal gasket; prepainted white aluminum cover sheets (standard); stainless steel (optional)

Roof: 0.04-inch aluminum sheet with aluminum bows on 32-inch centers

HyundaiHYUNDAI — HT Thermotech

Floor: Extruded aluminum 1.25-inch-high duct type; rear gutter flush with top of floor; last 4 inches of floor reinforced for forklift use with extruded aluminum inserts and 43-by-96-inch composite bearing sheet

Crossmember: 4-inch-deep extruded aluminum I-beams on 12-inch centers from end of upper running gear rails to support gear; 3-inch-deep high-tensile aluminum I-beam on 12-inch centers between upper coupler and support gear; 4-inch-steel 80,000-lb.-yield I-beams on 12-inch centers over support gear and upper running gear rails; two additional I-beams added in rear 4 feet of trailer for impact resistance

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Suspension: Hutchens H9700 with H9711 slider assembly

Brakes: Nonasbestos lining, 16.5-by-7-inch quick-change type, “2”

cam-operated automatic slack adjuster

Sidewalls: 0.04-inch prepainted white aluminum side sheet

Lining: 0.05-inch Bulitex Hybrid sides; 0.065-inch Versitex front; 0.065-inch Versitex rear doors; 0.065-inch Versitex ceiling

Rear frame: Stainless steel; hot-dipped galvanized high-tensile steel; bolt-on under-ride protection

Rear Door: Extruded aluminum frame-type swing doors with dual durometer seals and .04-inch prepainted white aluminum outer sheets; one anti-rack lockrod per door with rubber-grip handles and heavy-duty extruded aluminum hinges

Roof: One-piece 0.032-inch-thick aluminum; corrugated roof sheet design

UtilityUTILITY — 3000R Refrigerated van

Floor: 1.375-inch duct design with 16,000-lb. dynamic fork truck capacity and an integrated wearband; hardwood floor fillers; patented floor attachment system

Crossmember: 5.5-inch-deep aluminum I-beam crossmembers on 12-inch centers in bay area; 4-inch 80,000-psi steel I-beams on 12-inch centers over legs and rear suspension subframe

Suspension: Hendrickson HKANT 40,000-lb. Vantraax air-ride sliding tandem with standard Quik-Draw pin release system

Brakes: 16.5-by-7-inch brakes with outboard cast-iron drums; 2S-1M ABS system

Sidewalls: .04-inch prepainted white aluminum side skin with “J”-shaped side posts; foam-in-place insulation system with 4-inch front wall, 2-inch sidewall and 3-inch roof and rear door insulation

Lining: Kemlite 0.1- to 0.06-inch tapered FRP on sidewalls; 0.065-inch Versitex on front wall and ceiling

Rear frame: Satin-finished stainless steel

Rear doors: Patented Barrier Rear Doors with a bonded foam “sandwich” design

Roof: High-tensioned aluminum roof skin; 3-inch foam-in-place roof insulation

WabashWABASH NATIONAL — Arcticlite refrigerated

Floor: 1.375-inch heavy-duty aluminum duct floor with 16,000-lb. forklift rating; single-piece thermoplastic sub-pan

Crossmember: 5-inch aluminum I-beams on 12-inch centers in bay area; 4-inch steel I-beams on 12-inch centers over slider; 4-inch steel I-beams on 8-inch centers in rear 4 feet; HDPE composite floor stringers

Suspension: Hendrickson HKANT-40 Vantraax 40,000-lb. air-ride sliding tandem

Brakes: Meritor WABCO 2S-1M ABS

Sidewalls: 1-inch heavy-duty Z-posts; computer-controlled high-pressure foam injection

Lining: Versitex high-performance thermoplastic liner with integral scuff

Rear frame: Brushed stainless-steel rear frame

Rear doors: Modular door design with inner and outer door seals; nylon hinge and lock rod bushings

Roof: UV-resistant SolarGuard roof