JLG 1250AJP Boom Lift: Specs, Price and Buying Guide
Last updated: October 2026
The JLG 1250AJP is JLG’s largest articulating boom lift. It reaches a 125 ft platform height and 63 ft 2 in of horizontal outreach, and it can lift 1,000 lb in its restricted range or 500 lb across its full working envelope. Contractors use it for steel work, plant maintenance and other jobs where the platform has to go up and over obstacles that a straight boom can’t clear.
This guide covers the 1250AJP’s specs and features, how it compares to similar lifts, what used units cost on FleetNow and what to check before you buy one.
In this guide:
JLG 1250AJP Specs
| Specification | JLG 1250AJP |
|---|---|
| Platform height | 125 ft (JLG’s current spec sheet lists 125 ft 8 in) |
| Working height | About 131 ft |
| Horizontal outreach | 63 ft 2 in |
| Up-and-over clearance | 60 ft 6 in |
| Platform capacity | 1,000 lb restricted, 500 lb unrestricted |
| Jib | 8 ft articulating jib, 130° vertical (+75° / -55°), 125° side-to-side |
| Platform rotation | 180° |
| Platform size | 3 ft x 8 ft (36 in x 96 in) |
| Turntable rotation | 360° continuous |
| Tailswing | 9 ft 3 in |
| Stowed length | 37 ft 7 in |
| Stowed height | About 10 ft |
| Width | 8 ft 2 in (axles retracted), 12 ft 6 in (axles extended) |
| Wheelbase | 12 ft 6 in |
| Ground clearance | 12 in |
| Machine weight | About 44,000 lb |
| Max ground bearing pressure | 100 psi |
| Engine | Deutz TCD2.9 L4 Tier 4 Final diesel, 74.2 hp (current units) |
| Fuel tank | 31 gal |
| Hydraulic tank | 53 gal |
| Drive | 4WD, hydrostatic |
| Drive speed | 3.3 mph |
| Gradeability | 45% |
| Outside turning radius | 22 ft 6 in (axles retracted), 19 ft 4 in (axles extended) |
| Tires | 445/50D710 foam-filled |
Specs are from JLG’s 1250AJP spec sheet and dealer spec pages. JLG has built the 1250AJP since the mid-2000s, and engines, options and some ratings changed over the years. Dealer pages round the platform height to 125 ft, while JLG’s current sheet lists 125 ft 8 in. Always check the serial plate and decals on the machine you’re buying.
JLG 1250AJP Key Features
- Dual capacity: 1,000 lb in the restricted range for heavy crews and tools, or 500 lb across the full working envelope. A load sensing system watches platform weight and limits the envelope to match.
- Up-and-over reach: the articulating riser and main boom clear obstacles up to 60 ft 6 in high, then reach out 63 ft 2 in.
- 8 ft articulating jib: 130° of vertical movement and 125° of side-to-side rotation let the operator fine-tune platform position without moving the machine.
- QuikStik boom: JLG’s boom design for faster cycle times. Dealer spec pages quote ground to 120 ft in about 95 seconds.
- Drive-out extendable axles: the machine travels 8 ft 2 in wide and extends to 12 ft 6 in for stability at height.
- Rough terrain drive: 4WD, 45% gradeability, oscillating axle and foam-filled tires.
- Telematics and safety: recent units list ClearSky Smart Fleet telematics, an LED beacon and SkyGuard SkyLine as standard. Options include SkyWelder, SkyPower, SkyGlazier and cold weather packages.
JLG 1250AJP vs. Similar 120 to 135 ft Boom Lifts
The 1250AJP is usually cross-shopped against the Genie Z-135/70, the largest Genie articulating boom, and JLG’s own 1200SJP telescopic boom. The table below compares the key numbers.
| Spec | JLG 1250AJP | Genie Z-135/70 | JLG 1200SJP |
|---|---|---|---|
| Type | Articulating | Articulating | Telescopic |
| Platform height | 125 ft | 135 ft | 120 ft |
| Horizontal outreach | 63 ft 2 in | 69 ft 9 in | 75 ft |
| Up-and-over clearance | 60 ft 6 in | 75 ft 6 in | None (straight boom) |
| Platform capacity | 1,000 lb restricted, 500 lb unrestricted | 600 lb (2005 to 2012 units) | 1,000 lb restricted, 500 lb unrestricted |
| Jib | 8 ft articulating | Jib-Extend, 12 to 20 ft | 8 ft JibPLUS |
| Width, axles retracted | 8 ft 2 in | About 8 ft 2 in | 8 ft 2 in |
| Machine weight | About 44,000 lb | About 44,900 lb | About 40,900 lb |
| FleetNow listings (Oct 2026) | 13 listings, $51,850 to $288,850 | 4 listings, $72,300 to $129,900 | 9 listings, $77,000 to $187,900 |
Choose the 1250AJP when the platform has to work up and over pipe racks, roofs or structures and you want the 1,000 lb restricted rating. The Genie Z-135/70 gives you 10 ft more height and more up-and-over clearance. The JLG 1200SJP gives more straight-out reach and is a little lighter, but it can’t reach over obstacles. If you need more height on a straight boom, look at the JLG 1350SJP or JLG 1500SJ.
Read more: Genie Z-135/70 buying guide and JLG 1200SJP buying guide.
JLG 1250AJP Pros and Cons
| Pros | Cons |
|---|---|
| 1,000 lb restricted capacity is high for a 125 ft articulating boom | About 44,000 lb, so it needs a heavy-haul trailer and may need permits |
| 60 ft 6 in up-and-over clearance for work over obstacles | 9 ft 3 in tailswing needs room around the turntable |
| 8 ft articulating jib for precise platform positioning | Only 500 lb across the full envelope |
| Narrow 8 ft 2 in transport width with drive-out axles | Diesel only, so it is not suited to indoor work |
| Current units share the Deutz TCD2.9 engine with the JLG 1200SJP | Fewer used units for sale than smaller booms, so expect to search or travel |
Common Uses for the JLG 1250AJP
- Structural steel erection and connecting work
- Maintenance in refineries, chemical plants and power plants, where the platform has to reach over pipe racks
- Bridge inspection and repair
- Building exteriors, glazing and facade work (with the SkyGlazier option)
- Stadiums, arenas, hangars and large warehouses
- Welding at height with the SkyWelder option
JLG 1250AJP Price
JLG and its dealers don’t publish a list price for a new 1250AJP, so you’ll need a quote. For reference, a new 2026 unit was listed on FleetNow for $288,850 in October 2026.
Used prices on FleetNow ranged from $51,850 to $269,900 in October 2026. The middle half of used listings fell between about $65,000 and $110,000, with a median of about $95,000. Year, hours, condition and location all affect price.
| Model years | FleetNow asking prices (Oct 2026) | Listings with a price |
|---|---|---|
| 2007 to 2012 | $51,850 to $99,950 | 4 |
| 2014 to 2017 | $64,850 to $99,950 | 3 |
| 2018 to 2019 | $109,950 to $215,000 | 2 |
| 2022 | $269,900 | 1 |
| 2026 (new) | $288,850 | 1 |
FleetNow had 13 JLG 1250AJP listings in October 2026, and 11 of them showed a price. See current JLG 1250AJP prices.
Used JLG 1250AJP Buying Checklist
- Serial plate and decals: confirm the model year, engine and capacity ratings. Older units can differ from the current spec sheet.
- Inspection records: ask for annual inspection records and any repair history.
- Boom structure: look for cracks, bent sections and weld repairs on the riser, main boom and jib.
- Pins, bushings and wear pads: check for play at the pivot points and worn wear pads on the boom sections.
- Hydraulics: look for leaks at the lift, telescope and jib cylinders, hoses and the turntable area.
- Load sensing system: confirm the system works and switches correctly between the 500 lb and 1,000 lb ranges.
- Axles: extend and retract the axles and make sure the machine reports them as fully extended.
- Function test: run every function from the ground and platform controls, including the emergency stop, auxiliary power and the tilt alarm.
- Engine: check hours, starting, smoke and any warning lights.
- Tires and drive: check the foam-filled tires for chunking and test drive, steering and brakes.
- Telematics: if the unit has ClearSky, ask for its fault code history.
Use the FleetNow Inspect app to record your walkaround and photos.
Shop Used JLG 1250AJP Lifts With FleetNow
FleetNow lists used JLG 1250AJP lifts from equipment owners and dealers across the country, with prices, hours and photos.
- Used JLG 1250AJP lifts
- Used JLG articulating boom lifts
- All used articulating boom lifts
- All used boom lifts
- Smaller JLG articulating booms: JLG 800AJ and JLG 600AJ
- Large JLG telescopic booms: JLG 860SJ, JLG 1200SJP, JLG 1350SJP and JLG 1500SJ
Not sure which lift fits your job? Contact FleetNow or call 1-216-973-5124. Have a lift to sell? List your equipment on FleetNow.
Related guides: JLG boom lifts: models, specs and prices and types of boom lifts.
JLG 1250AJP FAQs
The JLG 1250AJP has a 125 ft platform height (JLG’s current spec sheet lists 125 ft 8 in), which gives a working height of about 131 ft. It reaches 63 ft 2 in horizontally and clears obstacles up to 60 ft 6 in high.
The 1250AJP has dual capacity ratings: 1,000 lb in its restricted working range and 500 lb across its full working envelope. A load sensing system limits the envelope based on platform weight. Check the capacity decal on the machine you are buying.
In October 2026, used JLG 1250AJP lifts on FleetNow were listed from $51,850 to $269,900, with the middle half between about $65,000 and $110,000. Older 2007 to 2017 units mostly sold for under $100,000. See current listings.
The JLG 1250AJP weighs about 44,000 lb. It is 37 ft 7 in long and 8 ft 2 in wide when stowed, so plan for a heavy-haul trailer and check permit requirements before moving it.
Current 1250AJP units use a Deutz TCD2.9 L4 Tier 4 Final diesel engine rated at 74.2 hp. Older units may have a different Deutz engine, so check the engine plate on used machines.
The 1250AJP is an articulating boom lift. It has an articulating riser, a telescoping main boom and an 8 ft articulating jib, so it can reach up and over obstacles. A telescopic (straight) boom like the JLG 1200SJP reaches farther straight out but cannot work over obstacles.
The 1250AJP is an articulating boom with 125 ft of platform height and 60 ft 6 in of up-and-over clearance. The JLG 1200SJP is a telescopic boom with a 120 ft platform height and more straight-out reach (75 ft). Both carry 1,000 lb restricted and 500 lb unrestricted.
