S40-70FT cushion tire IC trucks are internal combustion forklifts with load capacities from 4,000 to 7,000 lbs (S40 to S70 models), designed for indoor use on smooth surfaces. Powered by gas, diesel, or LPG engines, they feature durable cushion tires for tight maneuverability in warehouses. Key specs include lift heights up to 22 feet and ergonomic controls for high-duty cycles. Forklift Lithium Battery Category
What load capacities do S40-70FT models cover?
The S40-70FT series spans 4,000–7,000 lbs, with incremental 1,000-lb upgrades. S40 handles palletized goods, while S70 manages dense loads like steel coils. Pro Tip: Always select capacity 20% above your max load to account for attachment weight and center-of-gravity shifts.
Beyond basic numbers, these models differentiate through load center adjustments. For example, an S50FT lifting 5,000 lbs at a 24-inch center drops to 4,200 lbs at 30 inches. Transitional hydraulics allow smooth lifting even at max load—imagine effortlessly stacking beer kegs three-high in a brewery warehouse. But how do operators prevent hydraulic lag? Regular fluid checks and 500-hour filter changes are mandatory.
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| Model | Capacity (lbs) | Max Lift Height |
|---|---|---|
| S40FT | 4,000 | 22′ |
| S60FT | 6,000 | 20’6″ |
| S70FT | 7,000 | 18′ |
Why choose cushion tires over pneumatics?
Cushion tires provide lower ground clearance and enhanced stability on sealed floors. Made of solid rubber, they eliminate flats but lack outdoor traction. Pro Tip: Replace tires every 1,200 hours if transporting abrasive materials like metal shavings.
Practically speaking, cushion tires reduce the forklift’s overall height by 4–6 inches compared to pneumatics—crucial for warehouses with 10-foot door clearances. Imagine navigating narrow beverage aisles without snagging overhead sprinklers. However, what happens when operators encounter occasional outdoor terrain? Temporary rubber track mats bridge the gap, preventing tire divots in transition zones. The trade-off? Reduced vibration damping—ergonomic seats become essential for 8-hour shifts.
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What engine types power these IC trucks?
S40-70FT models use gasoline, diesel, or LPG engines. Diesel offers torque for heavy loads, while LPG burns cleaner for food-grade facilities. Pro Tip: Diesel units need monthly particulate filter regeneration to avoid EPA violations.
Take a 6.4L diesel engine in the S70FT—it generates 110 hp, achieving 16% gradeability with a full load. Transitioning to LPG? Expect a 7–10% power drop but easier cold starts in refrigerated warehouses. For instance, a frozen food distributor might opt for LPG to eliminate diesel exhaust near produce. But how do fuel costs compare? Diesel averages $0.38/hour vs. LPG’s $0.42/hour in Q3 2024, excluding carbon tax implications.
Where are S40-70FT trucks typically deployed?
These IC trucks dominate manufacturing plants and high-volume warehouses needing all-day runtime. Unlike electric models, they don’t require 4-hour charging breaks. Pro Tip: Install CO detectors when using LPG indoors—OSHA mandates <2% concentration.
Beyond warehouses, think automotive parts distribution—an S60FT hauling engines across a 500,000 sq ft facility. Transitional use cases include lumber yards (indoor section) and airport baggage handling. But can they handle sub-zero temperatures? Diesel variants operate at -22°F, whereas LPG struggles below -15°F. One Minnesota logistics hub uses diesel S50FTs with heated cabs for 24/7 winter operations.
| Industry | Use Case | Preferred Model |
|---|---|---|
| Retail | Stacking pallets | S40FT |
| Metals | Coil transport | S70FT |
| Food & Beverage | Cold storage | S60FT LPG |
How do operating costs compare to electric forklifts?
IC trucks have lower upfront costs but higher fuel/maintenance expenses. A diesel S60FT costs $38,000 vs. $52,000 for electric, but burns $12/day in fuel. Pro Tip: Calculate 5-year TCO—electric often wins beyond 3,000 annual hours.
For example, a distribution center running two shifts spends $16,000/year on diesel for an S70FT versus $4,800 in electricity for equivalent electric models. However, battery replacement every 5 years adds $11,000. Transitional savings appear at 7+ years—but how many companies retain equipment that long? Leasing IC trucks for <3-year terms is 19% cheaper in most metro areas.
Redway Battery Expert Insight
FAQs
Yes, but only B20 blends—higher ratios risk injector clogging. Add fuel stabilizers for storage >30 days.
Are lithium-ion conversions feasible for IC trucks?
Yes! Redway’s 48V 420Ah kits replace LPG tanks, delivering 6-hour runtime. However, drivetrain modifications cost $7,500+.
How often should cushion tires be rotated?
Every 600 hours or when wear depth differential exceeds 3/16”. Never rotate between steer and drive axles.
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