Which components determine the rated capacity for a wheel loader?

• A. Engine horsepower and transmission type.
• B. Tire brand and tread depth.
• C. Ballast and attachments.
• D. Cabin climate control.

Answer: (C)

Ballast and attachments determine a wheel loader's rated capacity. The ballast is the counterweight built into the machine to balance the weight you lift in front; more ballast typically increases the tipping load and lets the loader lift heavier loads, up to the design limits. Attachments change the weight and how the load sits relative to the lifting arm, which alters the leverage and the center of gravity. A heavier or taller attachment or a different load center can reduce the safe lifting capacity because the load moment increases, pushing toward the tipping point. Together, the ballast and the attachment define the safe lifting limit, often specified for a given load center.

Engine power and transmission affect how quickly or smoothly you can lift or move loads, but they don’t set the tipping limit. Tire brand and tread depth influence traction and stability under different conditions, but the fundamental rated capacity is still governed by ballast and attachments. Cabin climate control has no impact on lifting capacity.