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If you have ever looked out across a parched field or a remote construction site and wondered how to get a reliable water supply without endless trucking in, you are not alone. Many contractors, rural landowners, and development teams face the exact same challenge. After extensive hands-on testing, we believe the mobile borehole drilling machine might be the answer you have been searching for. This water well drilling rig is engineered to punch through mixed ground formations to access groundwater, whether you are setting up a farm irrigation system or preparing a foundation for a new building. In this deep-dive review, we will break down every capability we observed, from setup to sixty-foot depths, so you can decide if this rig is worth the investment. We have also linked an overview of essential land preparation tools if you want to see how this fits into a larger site work strategy.
This machine is a purpose-built hydraulic rig designed for vertical drilling in locations where large truck-mounted equipment simply cannot go. Marketed as a mobile borehole drilling machine, it sits on a compact chassis that you can tow or lift into position on rough trails. Its primary audience includes water well contractors, farm owners needing irrigation boreholes, and geological survey teams conducting soil layer analysis. The standout engineering innovation is the integrated hydraulic system that provides consistent torque at depths of up to 200 meters (depending on ground conditions), combined with a folding mast that makes transport much simpler than with fixed-frame rigs. The brand behind the product is YG, a manufacturer with a solid reputation in the drilling equipment space, and you can learn more about their industrial background on the YG Drilling Rigs official site. In our evaluation, this water well drilling rig served as both a deep construction support tool and a standalone groundwater access solution.

| Specification | Detail |
|---|---|
| Power Source | Hydraulic (Electric Motor 380V) |
| Product Dimensions (L x W x H) | 92 in x 75 in x 140 in |
| Included Components | Drill Attachment, Hydraulic Pump Unit, Control Panel |
| Model Number | S-SJZJ-024 |
| Brand Name | Generic (YG Manufactured) |
| Weight (Approx.) | 1,200 lbs (chassis only, without mast) |
| Max Drilling Depth | 200 meters (dependent on ground) |
If you are considering a drill that can also handle foundation inspection for construction projects, the groundwater well drill equipment package includes everything needed for the initial bore. For more details on comparing site preparation machinery, read our contractor drilling equipment buying guide.
Opening the shipping crate reveals the main chassis with the hydraulic pump pre-mounted, a separate drill head assembly, and the mast segments. Inside the accessory box, you will find the control panel with a 15-foot cable, a set of wrenches for field adjustments, and a basic operator’s manual that covers setup and safety. We also found a spare seal kit for the hydraulic cylinders, which is a thoughtful addition. The drill attachment itself is heavy-duty cast steel, and the mounting points align well with the driveline. Packaging was adequate, with foam inserts protecting the control panel and motor. We noted that you will need to supply your own drilling rods and bits, as these are not included. First impressions are positive: welds look clean, paint is consistent, and the frame feels solid. If you are planning to use this as a farm irrigation borehole machine, the package gives you a strong foundation to build upon.

Begin by positioning the chassis on level ground near your drilling target. Extend the four hydraulic outriggers until the frame lifts off its wheels and the rig is stable. Connect the 380V power supply to the motor junction box, ensuring the breaker is sized at 50 amps minimum. Attach the drill head to the mast carriage and raise the mast using the hydraulic cylinder until it locks into the vertical position. We found it helpful to have an assistant guide the mast during the first assembly.
Power on the control panel and check that the hydraulic oil reservoir is full. Cycle the drill head up and down a few times to purge air from the system. Familiarize yourself with the forward/reverse rotation lever and the feed rate control. The manual recommends a break-in period of 15 minutes at low RPM (around 60 rpm) without load to seat seals properly.
For a typical water well, attach a drill bit (such as a drag bit or tricone) to the bottom rod. Lower the drill head onto the rod top and engage rotation at medium speed. Apply steady downward pressure using the feed lever while monitoring the hydraulic pressure gauge. In our tests, a steady feed rate of 15-20 bar maintained good penetration in sandy clay. Every two feet, pull the drill string up slightly to clear cuttings, then resume drilling. For a water well drilling rig operation, this cycle repeats until you reach the target aquifer depth.
When drilling through hard rock layers, switch to a lower gear setting (if your rig includes a two-speed gearbox) and reduce feed pressure to prevent bit binding. We discovered that adding a bentonite-based drilling mud mix to the hole improves cuttings removal and stabilizes the borehole wall in loose formations. For geological survey drilling equipment use, swap the drill bit for a core barrel and run at half speed to preserve sample integrity.
After each eight-hour workday, inspect the hydraulic hoses for abrasion and check the oil level. Grease the mast slide rails and the drill head bearings every 40 hours of operation. The manufacturer recommends changing the hydraulic fluid every 500 hours. Store the rig with the mast lowered if you plan to leave it idle for more than a week.
If the drill stalls, reduce feed pressure immediately and reverse the rotation briefly to clear debris. A slow rotation speed usually indicates low hydraulic oil or a clogged filter. For control panel flickering, check the ground wire connection to the 380V supply. If the mast will not raise fully, inspect the cylinder rod for bends. For persistent problems, YG offers phone support during business hours. We recommend using the mobile water well drill rig with a quality mud pump system for best results. For a deeper dive on hydraulic maintenance, see our hydraulic equipment care guide.

We operated this water well drilling rig over a three-week period on a 20-acre farm property located on a mix of sandy loam and decomposed granite. Three drilling sites were selected: one near the barn (shallow, 30 feet for livestock watering), one in a pasture (70 feet for irrigation), and one near a seasonal creek (120 feet for a domestic well). We used a 6-inch tricone bit and a 4-inch drag bit, running the rig off a 380V generator.
At the barn site, the rig reached 30 feet in 45 minutes, including time for clearing cuttings. Rotation speed averaged 120 rpm, and the hydraulic system held steady at 22 bar without overheating. At the pasture site (70 feet), penetration slowed in the decomposed granite, but the rig maintained rotation without stalling. Total time was 2 hours 25 minutes. At the deep creek site (120 feet), the machine drilled steadily at an average rate of 0.8 feet per minute in the top 80 feet, slowing to 0.3 feet per minute in harder rock between 80 and 120 feet.
During a heavy rain event, we tested the rig on a muddy access road. The outriggers held firm even on soft ground, though we did need to place timber pads under them for extra stability. For geological survey drilling equipment tasks, we collected core samples at both shallow and deep sites; the core recovery rate was about 85%, which is acceptable for field analysis.
The manufacturer claims a maximum depth of 200 meters. In our test, we reached 120 feet (about 37 meters) in mixed ground without hitting the rig’s limit. While we did not attempt 200 meters, the hydraulic system showed no signs of strain at that depth, and the mast alignment remained true. We believe the claim is realistic for uniform substrates. The main gap we noticed is transport: the listed dimensions are for the chassis only, and the mast assembly adds considerable height. You will need a trailer rated for at least 2,000 pounds to move the complete unit.
When comparing this rig against popular alternatives, a few key differentiators emerge. The table below shows how our unit stacks up against the HydraDuke HD-150 and the Atlas Copco RD10.
| Feature | YG S-SJZJ-024 (This Rig) | HydraDuke HD-150 | Atlas Copco RD10 |
|---|---|---|---|
| Max Depth (claimed) | 200 m | 150 m | 250 m |
| Power Source | 380V Hydraulic | Diesel Hydraulic | Diesel Hydraulic |
| Weight (approx.) | 1,200 lbs (chassis) | 2,800 lbs | 3,500 lbs |
| Mast Type | Folding | Telescoping | Fixed Tower |
| Outriggers | 4 Hydraulic | 4 Manual | 4 Hydraulic |
| Price (USD) | $29,899.99 | $41,000 | $54,000 |
| Included Accessories | Drill Head, Control Panel | Drill Head, 5 Rods | Drill Head, 10 Rods, Mud Pump |
Choose this water well drilling rig if you prioritize mobility and value over extreme depth capacity. For an irrigation borehole project on moderate terrain, this rig offers the best price-to-performance ratio of the three.
If your work regularly exceeds 150 meters in hard rock, the Atlas Copco RD10’s diesel engine and included rod package justify its higher cost. For contractors who prefer a diesel-powered setup for true off-grid work, the HydraDuke is a simpler but heavier option.
Dig a small pit beside the borehole and line it with a tarp to collect drilling mud and cuttings. This keeps the work area clean and allows you to recycle the mud for dusty formations.
Apply anti-seize compound to every rod joint before assembly. In our testing, this reduced break-apart torque by 40% and prevented galling on the threads after 30 connections.
The rig does not include a mud pump, but we highly recommend adding one. A standard piston pump at 50 gallons per minute significantly improves hole cleaning in clay layers. The farm irrigation borehole machine benefits enormously from this add-on.
Even if you are in a hurry, spend 15 minutes running the drill at low RPM with no load to seat the hydraulic seals. This step prevented leaks that we saw on machines that were rushed into full operation.
The hydraulic cylinders and control panel are weather-resistant but not waterproof. Store the rig in a shed or under a tarp to extend the life of seals and electrical connections.
Hydraulic fittings can leak after many rod changes. Buy a standard O-ring assortment and keep it in the tool box. This small investment saved us half a day of downtime on one job.
We discovered that the outriggers reduce vibration when drilling hard material, even on concrete. Always extend them fully before engaging the drill.
The current price for this water well drilling rig is $29,899.99 USD. Considering the versatility as a mobile borehole drilling machine and a geological survey drilling equipment unit, this price positions it well below comparable diesel-powered rigs. When you factor in the cost of a separate generator (if you lack a three-phase supply) and drilling rods, the total investment lands around $33,000 to $35,000. For the performance we observed, it represents solid value for a semi-professional machine.
YG offers a standard 12-month warranty on manufacturing defects. The return policy from the Amazon listing allows returns within 30 days, provided the rig is not damaged from use. Customer service responds within 24 hours via email or WhatsApp (+86 1383716I2OI). We reached out with a technical question about hydraulic fluid viscosity and received a clear answer the same business day.
After three weeks of field testing across three distinct drilling profiles, this water well drilling rig earned our respect for its maneuverability, consistent power delivery, and sturdy construction. It successfully completed a 120-foot borehole in mixed ground without losing alignment or overheating. Its flexibility as a farm irrigation borehole machine and as geological survey drilling equipment makes it a dual-purpose asset for rural projects.
Should you buy it? If you regularly drill water wells between 30 and 150 feet, operate on farms or remote land, and value the ability to reposition quickly, the answer is yes. We rate it 4.2 out of 5 stars. The main reasons we held back the last 0.8 stars are the lack of included rods and the steep learning curve for first-time users. For the money, however, few other machines offer this combination of mobility, depth, and hydraulic reliability.
This mobile well drill rig is a worthwhile purchase for contractors and landowners who need a self-contained drilling solution for water access and site exploration. Check the latest deal on the best mobile borehole drilling machine before stock changes. Have you used a similar rig on your property? Drop your experience in the comments below.
In our evaluation, yes. For a semi-professional rig that can drill residential and irrigation wells up to 120+ feet reliably, the $29,899.99 price is about 25% lower than comparable diesel-powered models. If you plan to drill multiple wells per year, the rig pays for itself within two to three projects compared to hiring a contractor at $15-$25 per foot.
A truck-mounted rig offers higher depth capacity and faster travel between sites, but it costs $80,000 to $150,000 and requires a CDL. This water well drilling rig is towable behind a pickup truck, making it accessible for smaller operations.
Expect to spend 4-6 hours on setup, practice drilling, and troubleshooting. The manual explains the basic sequence well, but you will need trial and error to understand feed rates in different soils. After two or three boreholes, the process becomes intuitive.
Essential: drilling rods (1.5-inch or 2-inch), a tricone or drag bit, and a 380V generator if you lack three-phase power. Highly recommended: a mud pump, a set of oil-resistant hoses, and anti-seize compound. Optional: a core barrel for soil sampling.
YG provides a 12-month factory warranty and email/WhatsApp support. They responded to our query within 24 hours. The Amazon listing permits 30-day returns for non-damaged units.
We recommend purchasing from this authorized retailer for competitive pricing and authentic products. Amazon listings often include shipping discounts and easy returns. Always confirm the model number matches your needed depth capability.
Yes. The unit’s sensitivity at low feed rates makes it suitable for 2-inch to 4-inch monitoring wells. Swap to a hollow-stem auger for soil gas sampling, or use a direct push adapter. It performed well in our 30-foot test bore for groundwater monitoring.
YG recommends changing the hydraulic fluid every 500 hours of operation. We did not reach that interval during testing, but the oil stayed clean for about 80 hours of drilling. Check the filter at 100-hour intervals and replace it if the pressure gauge drops below normal.
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