What Is The Capacity Of H135-155ft Forklift Series?

The H135-155ft forklift series offers capacities ranging from 13,500 to 15,500 pounds (6.1 to 7 metric tons) under standard load centers of 24 inches. Designed for heavy-duty industrial applications, these models balance lifting power and stability through reinforced chassis designs and optimized counterweights. Hyundai’s engineering ensures consistent performance in ports, warehouses, and lumber yards, with variations depending on mast height, battery type, and attachments.

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What defines the capacity range of the H135-155ft series?

The 13,500–15,500 lb capacity is achieved through structural reinforcements like high-tensile steel frames and dual-drive axles. Load center (24″ standard) directly impacts stability—exceeding this reduces effective capacity. Pro Tip: Always verify the forklift’s data plate for exact ratings, as attachments (e.g., clamps) can lower capacity by 10–15%.

Hyundai’s H135-155ft series uses a modular design to accommodate varying demands. For example, the H155ft achieves 15,500 lbs at 24″ but drops to 13,200 lbs at 36″. This mimics how a lever’s length affects effort—longer load centers increase torque on the mast. Technical specs include 18.5–25 kW AC motors and 48V/600–800Ah lead-acid or lithium batteries. Critical factors like tire type (cushion vs. pneumatic) further influence load limits. Did you know that ambient temperature swings >30°F can reduce battery efficiency, indirectly affecting lifting consistency?

How do load centers affect H135-155ft performance?

The 24-inch load center is the pivot point where loads balance without tipping. Exceeding this shifts the center of gravity, forcing the forklift’s stability triangle to narrow. Pro Tip: For irregular loads, calculate the effective load center using (Load Weight × Distance) / Total Capacity.

Imagine stacking pallets 4 feet deep—this extends the load center beyond 24″, creating a seesaw effect. The forklift’s rear counterweight can’t compensate, forcing operators to derate capacity. Hyundai’s Dynamic Stability System (DSS) partially mitigates this via sensors that alert drivers of tip risks. However, physically adjusting loads remains critical. Why risk equipment damage when a simple repositioning maintains safety? Beyond static limits, sudden stops with extended loads magnify momentum, potentially breaching the stability triangle.

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Lead-Acid vs. Lithium Batteries in H135-155ft Models

Lithium batteries (48V/600Ah) provide 20% faster charging and 30% weight savings versus lead-acid, improving capacity utilization. Lead-acid remains cheaper upfront but requires 2-hour watering cycles and vents explosive gases.

In a 3-shift warehouse, lithium’s opportunity charging adds 18+ productive hours weekly. Lithium’s consistent voltage also maintains motor torque, whereas lead-acid voltage sag under load can reduce lifting speed by 15%. For instance, a H140ft with lithium completes 110 lifts/day vs. 95 with lead-acid. But is the higher initial cost justified? Operations exceeding 12 hours/day typically see ROI within 14 months. Additionally, lithium handles -4°F to 122°F ranges better, reducing cold-weather derating.

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How does mast height influence capacity?

Masts over 15 feet reduce capacity by 8–12% due to elevated load centers and hydraulic cylinder stress. Triple-stage masts add 300–500 lbs vs. duplex, compounding the effect.

A H135ft with a 22-foot mast has a max capacity of 11,900 lbs—down from 13,500 lbs at 15 feet. It’s akin to lifting a weight on a wobbling ladder versus stable ground. Hyundai’s mast designs use overlapping rollers to minimize lateral deflection, but operators must still adhere to derating charts. High masts also increase service needs—cylinder resealing every 1,200 hours vs. 2,000 for standard heights. For lumber or steel coil handling, consider fork positioners to adjust without height compromise.

Comparing H135, H140, and H155 Models

The H135 (13.5k lbs), H140 (14k lbs), and H155 (15.5k lbs) share 85% components but differ in motor power, axle strength, and counterweight. H155 adds 900 lbs of cast iron counterbalance for stability.

In a refrigerated warehouse, the H140’s 14k capacity handles palletized meats at -20°F, while the H155’s extra power suits shipyard containers. The H135’s compact turn radius benefits tight aisles, but with 10% slower acceleration than H155. Why pay for unneeded capacity? Audit your average load weights—if 80% are under 12k lbs, H135 suffices. Note that all models support hybrid drive options for fuel-sensitive environments.

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