20’/40′ Combo Tandem
Overall Length: 31’-7” (retracted) or 40’-11” (extended)
Overall Width: 96”
Fifth Wheel Height: 47 ± 1”
Rear Deck Height: 48 ± 1”
Kingpin Location: 18” (From the rear of the front bolster
Landing Gear Location: 100” (From the kingpin center
Tandem location:32” (From rear face of rear bolster to rear axles center when extended)
Axle Spread: 109”
Tare Weight:9,350 lbs ± 3% Payload: 54,500 lbs for 20’ loaded or 57,000 lbs for 40’ loaded
Color on request
Product Details
Steel structure
We offer single-girder and double-girder designs for different operational needs.
When the crane span exceeds 100m, single-girder design is better:
- Needs much less steel to achieve same performance
- Offers lower weight: less foundation work
- Gives a greater load unbalance between the upper trolley hooks
Cabin
We offer single-girder and double-girder designs for different operational needs.
When the crane span exceeds 100m, single-girder design is better:
- Needs much less steel to achieve same performance
- Offers lower weight: less foundation work
- Gives a greater load unbalance between the upper trolley hooks
Core of Lifting
We offer single-girder and double-girder designs for different operational needs.
When the crane span exceeds 100m, single-girder design is better:
- Needs much less steel to achieve same performance
- Offers lower weight: less foundation work
- Gives a greater load unbalance between the upper trolley hooks
Bogies
We offer single-girder and double-girder designs for different operational needs.
When the crane span exceeds 100m, single-girder design is better:
- Needs much less steel to achieve same performance
- Offers lower weight: less foundation work
- Gives a greater load unbalance between the upper trolley hooks
Specifications
Warranty Policy
| Main beam | 16″x5” fabricated I-beam with high strength flanges and 6-11/32” height for gooseneck rail. ASTM Grade 130. |
| Upper coupler | 5/16” pick up plate with JOST (USA) 2” diameter square type kingpin per SAE standard, 380-420 HB, with 2” water drain holes, design to be integrated with main frame through welding. |
| Front Bolster | Fabricated bolster assembly with high strength plates with 89” centers, equipped with none retractable twist locks. Local supplier (Vietnam). |
| Front Locking pin | BUFFERS (India) & VAN DOORN (Turkey). |
| Center twist Lock | SCHULZ (Spain). |
| Rear Bolster | Tapered rectangle bolster of the main frame fabricated by 3/8” thick top and bottom plate with 5/16” thick side plates. 6-5/8” height x 4” wide fabricated box beam bolster on slider composed by1/2” thick top/bottom plates with 5/16” thick side plates with flip up twistlocks. Local supplier (Vietnam). |
| Rear twist Lock | BUFFERS (India). |
| Slider Beam | Fabricated I beam with 3/4″x5” upper and lower flanges and 3/16” web, slider extends or retract on 6” diameter steel rollers. Local supplier (Vietnam). |
| Locking system | Air operated locking pins, activated by HALDEX (Mexico) Goldseal 30/30 spring brakes on both sides of the trailer through third gladhand on front sill. |
| Landing Gear | SAF-HOLLAND (USA) ATLAS65 with 65,000 lbs capacity, 2-speed 17” travel with low “T” shoes. Crank handle is located on the driver’s side of the chassis. Pre-painted BLACK color. Landing gear brackets are bolted on the main beam as the layout. |
| Suspension | HUTCH (USA) 109″ axle spread, underslung configuration with STANDEN (Canada) high-arch single spring (360-00). Pre-painted BLACK color. |
| Axles | YORK (India) 5” round axles with 22,500lb capacity; 71.5” track; 16.5”X7” 4515Q brake. Dust shields are provided. Pre- painted BLACK color.
1.5-28 spline, HALDEX (India) 5.5” automatic slack adjusters. None reserved PSI interface; Heat Sensing Labels. Axle Installation orientation: 90 degrees REAR, chambers DOWN (1 abs ready front, 1 non abs rear per unit). |
| Lubricant | Synthetic Semi-fluid grease lubricant. |
| Wheels | 22.5 x 8.25 10-stud hub-piloted wheels with 5 hand holes and with TR572 valve stem. |
| Wheel end | YORK (India) Hub & Drum Assembly. STEMCO (USA) 358-4009 Intergrated Sentinel Grease Hub Cap with umbrella valve. SKF (USA) seals P/N Scotseal plus XL 46300. ORBIT TN (India) bearings. Spindle nut: YORK (India) Double Nut. (5-year warranty wheelend). |
| Lubricant | MOBILITH SHC 007 (India) Synthetic Semi-fluid grease lubricant. |
| Wheels | ALCOA (Hungary) 22.5 x 8.25 10-stud hub-piloted Aluminum wheels. |
| Tires | WESTLAKE (Thailand) 255/70R22.5-16PR tubeless type. |
| Brake System | SEALCO (USA) 110800 spring brake priority valve system and WABCO (Thailand/ USA/ Germany/ Poland) 2S/1M ABS system. PHILLIPS (USA) glad hand 12-0061 and 12-0081. TECTRAN (USA) 3/8” blue air tube for control and 3/8” red for supply. HALDEX (Mexico) Goldseal T30/30, 2.5” stroke brake chamber. TCMC (Vietnam) air tanks (BLACK color). |
| Electrical | PHILLIPS (Mexico) mold seal wiring harness, Reserved PSI and GPS connector. (10-year warranty). OPTRONICS (Taiwan) LED lights (amp connections for S/T/T lights and .180 bullets for others). The theft proof design used for 4” LED lighting. |
| Electrical Receptacle | PHILLIPS (Mexico) 16-724 plastic material with split pins. |
| Document Holder | TPC (Vietnam). Installed on roadside near crank handle. |
| Conspicuity tape | “3M” (Singapore) brand. Installed per federal regulations. |
| Painting | Abrasive blast of all metal surfaces – not less than SA-2.5 to achieve clean bare steel. Surface will be coated with electrophoresis primer and powder topcoat. Color BLACK RAL9005 and at the corner painted YELLOW color. Total thickness not less than 80μm after dry membrane. Coating supplier: PPG (Vietnam) (7-year warranty). |
| Marking | Customer configuration (includes Decal, layout, VIN, nameplate). Local supplier (Vietnam). |
| Hubodometer | NONE. |
| Tire Inflation System | NONE. |
| Mud flaps | TPC (Vietnam) 18”x24”x1/4” white PVC mud flaps with “CUSTOMER” logo. |
Advanced Features of 20’/40′ Combo Tandem
Electrical and Lighting Systems
The 20’/40′ Combo Tandem Chassis is equipped with a premium PHILLIPS (Mexico) mold-sealed wiring harness, which effectively protects the wiring from environmental factors and potential damage. Additionally, it features OPTRONICS (Taiwan) LED lights, specifically designed to resist theft and withstand harsh conditions.
Innovative Air System
The 20’/40’ Combo Tandem is equipped with an air-operated locking pin system, activated by HALDEX (Mexico) Goldseal 30/30 spring brakes. This system ensures that the trailer stays securely connected to the tractor, preventing accidental disconnection and contributing to the chassis’s safety and stability during operations.
Maintenance and Serviceability
Ease of Maintenance
The Tandem Combo Chassis is designed with serviceability in mind. The lock system, axles, and suspension components are all engineered for easy maintenance and repair. The pre-painted steel components are resistant to corrosion, reducing the frequency of maintenance work and extending the operational lifespan of the chassis.
Spare Parts and Warranty
Many of the components, such as the STEMCO wheel ends and Haldex brake chambers, come with multi-year warranties, providing peace of mind for operators. Additionally, spare parts are readily available from local suppliers, ensuring minimal downtime and efficient repairs when needed.
Conspicuity and Safety Markings
The 20’/40′ Combo Tandem features 3M conspicuity tape installed in compliance with federal regulations, enhancing visibility and safety on the road. Additionally, custom markings and decals can be applied as per client specifications, ensuring branding and clear identification of the chassis in transportation fleets.
| No. | Part Name | Manufacturers Name | Time | Warranty Information |
| 1 | Frame | Thaco Trailers | 5 Years | THACO INDUSTRIES TRAILERS AND HEAVY STEEL STRUCTURES MANUFACTURING LIMITED LIABILITY COMPANY Add : Chu Lai IZ., Nui Thanh Town, Quang Nam province, Vietnam Office: (+84) 2353.565.327 Website: https://thacotrailers.com/ |
| 2 | Paint(ED + Top coat) | PPG | Painting: 7 Years |
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20’/40’/45’ City Combo Tridem Without Genset
20’/40’/45’ City Combo Tridem With Genset
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