Bare rental · You operate
A rock slinger is a truck that places aggregate by conveyor instead of dumping it in a pile. ON-SITE runs a Rock Slinger Ultra XL-18 from its yard at 21815 N 16th St in Phoenix, so rock, gravel and base land where they are needed without a loader crossing finished ground or a crew moving it by hand.
A name and a number is all it takes. We call back with the quote, usually same day.
18
Machine class
1
In our fleet
XL-18
Ultra model
4:30
AM dispatch
It replaces the entire second half of a material delivery. A normal dump truck leaves a pile at the closest point it can reach, and then somebody has to move that pile: a loader tracking across finished ground, or a crew with wheelbarrows and a day of labor. A slinger places the material directly where it goes, through a conveyor, from the truck.
That matters most when the destination is awkward. Behind a building, over a wall, into a side yard, down a slope, along a drainage line, around finished landscaping, or onto a roof deck. The truck stays on the road or the pad and the material still ends up in the right place.
The saving is labor and repair. On the jobs where a slinger fits, it usually costs less than the crew hours and the damage that spreading by hand or by loader would have cost, and it finishes in a fraction of the time.
What we can confirm about the unit in our yard. Placement distance, capacity and material handling come with the quote.
| Spec | Detail | What it means for your job |
|---|---|---|
| Make and model | Rock Slinger Ultra XL-18 | The model designation the spec sheet is issued against |
| Machine type | Rock slinger | Also searched as a stone slinger, slinger truck or stone spreader |
| Class | 18 | The class figure carried in the model designation |
| Model year | 1996 | The year on the unit in our yard |
| Units in fleet | 1 | Quoted and dispatched from the yard on 16th Street |
| Rental type | Bare or operated | Most slinger work is quoted operated, because placement is the skill |
| Placement distance and capacity | With quote | Confirmed for your site and material rather than quoted from a generic figure |
Send us a photo of where the material has to end up. On slinger work a picture answers the question faster than a paragraph, and it tells us immediately whether the truck can reach it.
We publish only what we can stand behind. Boom and jib lengths, dimensions, weights and the load chart come with the quote, off the sheet for the actual unit in our yard rather than a number copied from a spec site for a different build of the same model.
10%
Whatever you are paying for equivalent rock slinger work today, we go 10% under it going forward. Not an introductory rate that quietly resets after the first job. Send the invoice, or just describe the work and we will quote it against the market and apply the discount anyway.
There is no rate card on this page on purpose. Every job gets quoted for what it actually is.
Request a quote
Name and number is all we need. We call back with the quote, usually same day.
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Anyone who would otherwise be paying a crew to move rock by hand.
Landscape contractors
Decorative rock and granite placed in a finished yard without tracking across it.
Drainage and erosion crews
Rip rap and drainage rock placed along channels and slopes.
Roofing contractors
Ballast and gravel placed onto flat roof systems.
Pipeline and utility crews
Bedding and backfill material placed into a trench line rather than dumped beside it.
Property managers and HOAs
Rock refresh across common areas without closing the whole site down.
Builders on finished sites
Material delivered into a back yard after the walls and driveway are in.
Bare means you run it. It does not mean you are on your own for everything around it.
Delivered and picked up
On our own lowboys and flatbeds, so the haul is not a third company to chase.
COI verified before release
Your certificate is checked on our side before the machine leaves the yard.
Photo walk-around
Condition recorded at both ends, so there is nothing to argue about later.
Day, week or month
Priced for the length you actually need rather than forced into a longer term.
Attachments quoted with it
Buckets, forks and support gear come off the same lot on the same quote.
Cranes from the same yard
If the job also needs a lift, it is one number and one invoice, not two vendors.
The comparison that decides the job, and it is usually about labor rather than material.
Dump truck and a crew
Rock slinger
Loader and a pile
Bare rentals go by the day, the week or the month, priced for the length you actually need rather than pushed into a longer term. Delivery and pick-up are quoted from the yard as their own line, so you can see the haul separately from the machine.
Your certificate of insurance is verified before the machine is released, every time. We record a photo walk-around at drop and at pick-up so condition is documented on both ends and damage never turns into an argument at the end of the rental.
Most slinger work is quoted operated rather than bare, because the value of the machine is in placing the material accurately. Tell us which you want and we will quote it that way.
Quoted per job. Slinger work prices around access and volume rather than around a machine rate.
Volume of material
How many tons have to be placed decides the number of loads and the length of the day.
Where the truck can park
Placement distance from where the truck can legally and safely sit is the key access question.
Material type
Rock, granite, sand and base all behave differently through a conveyor.
Number of drop locations
One long run is quicker than fifteen separate placements around a property.
Distance from the yard or pit
Cycle time between the material source and your site is part of the day.
Operated or bare
Most of this work is quoted operated, which changes it from a rental into a placed-material service.
10%
Send us the invoice you pay today for equivalent slinger work and we will go 10% under it going forward.
Beat my rateThe yard is at 21815 N 16th St in north Phoenix. The move is quoted from there, so the closer the job sits to the North Valley, the shorter and cheaper the haul.
Metro Phoenix is the normal working radius, because cycle time between the material source and the site drives the cost. We will go further across Arizona when the volume justifies it.
Metro cities we run to most
If you have been quoting rock delivery plus a day of labor to move it, price the slinger against that total rather than against the delivery alone. That is the comparison that usually decides it, and it is the one worth doing before you book the crew.
Everything here is owned and parked on 16th Street in north Phoenix. Swipe through, or open any machine for its page.
Cranes and earthmoving off one lot in north Phoenix, delivered on our own trucks. One number, one invoice, whatever the job needs.
