End Carriage 3.2 Ton S18m A5 4 Pairs for Single Girder Under Hung Overhead Crane

The 4 pairs (4对) configuration is supplied because a single girder under hung crane requires end carriages at multiple points:

• Bridge end carriages: The main bridge beam requires end carriages at both ends to travel along the runway
• Under hung configuration: The end carriages run on the bottom flange of the runway beam, requiring precise wheel alignment
• Spare/replacement: Additional pairs may be supplied for maintenance or future expansion

When multiple end carriages are used:

• Each end carriage must be aligned — wheel alignment is critical for smooth travel
• Rail size must match: 32a~45c rail is required for the Ø100mm wheels
• Traveling drives must be synchronized — the RF37-11.83-0.55KW drives must work in coordination
• Structural load must be considered — the runway beam must support all end carriages

If your crane requires a different number of end carriages, tell Yuantai your crane configuration for the best solution.

The RF37-11.83-0.55KW traveling drive is specified for this NLX end carriage because:

• Speed ratio 11.83: Provides the correct reduction for 2.0~20 m/min traveling speed with Ø100mm wheels
• 0.55kW motor: Sufficient power for the 3.2t capacity and 18m span under hung crane
• Compact design: The RF37 gearbox is compact and fits within the end carriage frame
• Proven reliability: RF series gearboxes are standard for crane travel drives and easy to maintain
• Dual motor configuration: 2×0.55kW provides balanced drive across the end carriage

Do not substitute a different drive without recalculating the travel speed and torque requirements. The RF37-11.83-0.55KW is matched to the Ø100mm wheel and 32a~45c rail for this application.

A single girder under hung crane is used for this application because:

• Maximizes hook height: The under hung design allows the hook to be raised closer to the ceiling, maximizing available lifting height
• Lower building cost: The crane runs on the bottom flange of the runway beam, requiring less building structure than top-running cranes
• Light capacity: At 3.2t, the single girder design is sufficient and cost-effective
• Compact footprint: The NLX end carriage is compact and fits tight spaces
• Easy installation: The under hung design is easier to install than top-running cranes

A double girder overhead crane is not typically used at 3.2t for under hung applications — the single girder with NLX end carriage is the standard configuration.

Six numbers on this NLX end carriage drawing must match your crane, or the end carriages will not fit or operate correctly:

If any of these differ from your crane, tell Yuantai before ordering — each change affects price and lead time on the NLX end carriage.

32a~45c rail is specified for this NLX end carriage because:

• Wheel diameter Ø100mm — the wheel is designed to run on 32a~45c rail
• 3.2t capacity and 18m span: The load moment requires a rail with sufficient head width and web thickness
• Under hung crane design: The rail must support the end carriage running on the bottom flange
• Standard availability: 32a~45c is a common rail range, easy to source and replace
• Long service life: 32a~45c rail is standard for 3.2t under hung cranes in continuous use

Do not substitute a lighter rail without recalculating the wheel load and dynamic forces. The Ø100mm wheel and 3.2t capacity require 32a~45c rail or equivalent.

No — this NLX end carriage is configured for indoor workshop use on a single girder under hung crane. The end carriage runs on elevated runway rails supported by the building structure. Outdoor use would require:

• Different crane type — a gantry crane with ground rails and A-frame legs is more suitable for outdoor use
• Weather protection — outdoor electrical enclosures (IP55+) and anti-corrosion treatment
• Wind load design — anti-wind devices and anchoring for outdoor wind exposure

For outdoor applications, consult Yuantai Cranes for a suitable gantry crane solution.

To avoid surprises at installation, these items are outside the NLX end carriage supply scope unless you specifically add them:

• Runway rail (32a~45c) and rail fasteners
• Runway beam and building column reinforcement
• Building structural support for the end carriage wheel load
• Site power supply up to the crane isolator
• Erection crane and site lifting equipment
• Local electrical connection and permits

Because the single girder under hung crane runs on elevated runway rails, the building structure is critical — the runway beam and columns must support the wheel load. Yuantai can provide runway load drawings as optional items.

Send these nine items and Yuantai will issue a free custom NLX end carriage CAD drawing and proposal within 24 hours:

1. Required lifting capacity (t) — e.g., 3.2t
2. Crane span (m) — e.g., 18m
3. Required travel speed (m/min) — e.g., 2.0~20 m/min
4. Rail size — e.g., 32a~45c
5. Number of end carriages required — e.g., 4 pairs
6. Power supply (V / Hz / Ph) — e.g., 380V 50Hz 3P
7. Duty class — e.g., A5
8. Building column and runway beam capacity
9. Control preference: pendant, wireless, cabin, or both

The more complete the list, the faster and more accurate the NLX end carriage drawing and quote.

This published NLX end carriage drawing and 3D rendering are a free technical reference — you may use them to plan your crane and check fit. A project-specific NLX end carriage GA drawing is also free for standard configurations. A design fee may apply only for complex crane conditions, non-standard spans, or specialized customization engineering. The NLX end carriage drawing remains the property of Yuantai Cranes: unauthorized copying, use, or manufacturing without written authorization is strictly prohibited.