Skyjack SJ4740: Specs, Price and Buying Guide

Last updated: October 2026

The Skyjack SJ4740 is a 47 in wide electric slab scissor lift with a platform height of about 39 ft, or about 45 ft of working height. It is one of the tallest slab scissors you can buy and still fit through a 4 ft wide opening, which makes it popular for warehouses, big-box stores, gyms and other buildings with high ceilings.

The SJ4740 has come in three versions with different capacities and weights, so this guide shows the specs for each, what the SJ4740 sells for on FleetNow, how it compares with the Genie GS-4047 and JLG 4045R, and what to check before you buy.

In this guide:

• SJ4740 versions
• Skyjack SJ4740 specs
• Key features
• SJ4740 vs Genie GS-4047 and JLG 4045R
• Pros and cons
• Skyjack SJ4740 price
• What to check before buying used
• FAQs

• SJIII 4740 (about 2016 to 2018): The original model, with a 39 ft 5 in platform, a 500 lb capacity for two people and hydraulic front-wheel drive. It is the heaviest version at 7,480 lb.
• SJ4740 (about 2019 to 2023): Redesigned with a 38 ft 11 in platform, a 770 lb capacity for three people and a lighter 6,467 lb weight. It still uses hydraulic drive. Most SJ4740s for sale today are 2017 to 2020 units from these first two versions.
• SJ4740 E (2024 and newer): Same height and capacity as the 2019 to 2023 model, but with Skyjack’s E-Drive brushless AC electric drive in place of hydraulic drive motors. Skyjack says E-Drive gives up to 20% more run time per charge and has far fewer hydraulic connections.

The model year is on the serial plate. Check it and the capacity decal on the platform to confirm which version you are looking at, since the ratings differ.

Specs are from Skyjack spec sheets and dealer spec pages for North American (ANSI) models. Working height is platform height plus 6 ft.

Outdoor ratings vary by version: the SJIII 4740 sheet lists a 28 mph wind rating, while the standard SJ4740 E is rated for indoor use only, with an option for one person outdoors up to 24 ft. Always follow the decal on the machine. Skyjack doesn’t publish a run time, and battery options vary, so ask the seller what batteries are installed and how old they are.

• Height in a narrow chassis: About 45 ft of working height from a 47 in wide machine, so it fits through wide doorways and down warehouse aisles.
• Drive at full height: All versions can drive with the platform fully raised, at about 0.5 mph, so you can reposition without lowering.
• Three-person capacity (2019 and newer): 770 lb lets three workers and their tools work from one deck. Older SJIII units are limited to two people and 500 lb.
• 3 ft roll-out extension deck: Reaches over obstacles and gets workers closer to the wall or ceiling.
• Folding rails: Lowering the rails brings the stowed height down to about 79 in for transport and low doorways.
• Simple Skyjack design: Color-coded and numbered wiring, simple controls and solid non-marking tires.
• E-Drive on the SJ4740 E: Brushless AC drive motors replace hydraulic drive motors for longer run time and fewer leak points.

Common jobs: ceiling, lighting and sprinkler work in warehouses and retail stores, HVAC and electrical installation, signage, and maintenance in gyms, arenas, airports and factories.

The SJ4740’s closest competitors are the Genie GS-4047 (now the GS-4046 with E-Drive) and the JLG 4045R (later called the R4045, and followed by the ES4046). All three are about 40 ft slab scissors under 4 ft wide.

The 2019 and newer SJ4740 carries more people and weight than the GS-4047 and is lighter, which helps on floors with load limits. The JLG 4045R is narrower and rated for outdoor use, but longer. Used GS-4047s listed for less than the SJ4740 on FleetNow in October 2026. For more models, see our guide to 40 ft scissor lifts, the Genie scissor lift guide and the JLG scissor lift guide.

• About 45 ft of working height in a 47 in wide machine
• 770 lb and three-person capacity on 2019 and newer units
• Drives at full height
• Large used supply (about 150 listings on FleetNow), mostly 2017 to 2020 units
• Simple, easy-to-service Skyjack design

• Older SJIII units carry only 500 lb and two people
• Indoor use only on standard SJ4740 E models; limited outdoor ratings on older versions
• Stowed height of about 98 to 100 in with rails up, so rails must fold for low doorways
• Hydraulic-drive versions need more checks for leaks
• Few E-Drive units on the used market yet

In October 2026, FleetNow had 153 Skyjack SJ4740 listings, mostly 2017 to 2020 units. Most sold for about $11,600 to $17,600, and 2019 and newer units, with their higher 770 lb capacity, sold for about $2,000 to $4,000 more than 2016 to 2018 units.

A new SJ4740 E is sold through Skyjack dealers on a quote basis. The few 2024 and 2026 units on FleetNow listed for $25,500 to $36,900, which gives a rough idea of the new price.

Things that raise the price: a 2019 or newer unit, low hours, newer batteries, a recent annual inspection and clean decals. Bad batteries, hydraulic leaks, damaged rails and missing manuals lower it.

• Version and ratings: Read the serial plate and decals to confirm the model year, capacity (500 lb or 770 lb), occupants and any outdoor rating.
• Inspection records: Ask for the latest annual and frequent inspection reports and the service history.
• Batteries and charger: Check battery age, corrosion and water levels, and run the lift for a while to see that it holds a charge. Test the onboard charger.
• Scissor stack: Raise to full height and watch for jerky movement, drift or noise. Look for cracked welds, bent arms and worn pins and bushings.
• Hydraulics: Check the lift cylinder, hoses and fittings for leaks. On 2023 and older units, also check the hydraulic drive motors and hoses at the front wheels.
• Controls and safety devices: Test the platform and ground controls, the emergency stops, the tilt alarm, the pothole protection and the overload sensing system.
• Platform: Check the rails, gate and folding rail pins, and make sure the extension deck slides and locks.
• Drive and tires: Drive in both directions, stowed and raised, test steering and brakes, and check the solid tires for chunking.

Our guides to buying a used scissor lift and common electric scissor lift problems cover more checks, and the FleetNow Inspect app helps you record a walkaround inspection with photos.

This video from For Construction Pros covers the safety features Skyjack added to the SJ4740 for the ANSI A92 standards. It is a product overview and doesn’t replace operator training.

FleetNow lists used Skyjack SJ4740 scissor lifts from rental companies and dealers across the country.

• Used Skyjack SJ4740 lifts
• Similar Skyjack models: SJ4632, SJ4732 and SJ4626, or all used Skyjack scissor lifts
• Other brands: Genie GS-4047, JLG 4045R and all used scissor lifts
• Learn more: our Skyjack scissor lift guide covers the full lineup

Can’t find what you need? Contact us or call 1-216-973-5124. Have a scissor lift to sell? List your equipment on FleetNow.