Greg Smith GS-RBJ6 Review: Premium Rolling Jack with Unmatched Build Quality

Greg Smith Equipment has a well-deserved reputation for building automotive service equipment to a higher standard than what the market demands. Their products consistently feature thicker steel, cleaner welds, more durable finishes, and tighter tolerances than competing products at similar price points. The GS-RBJ6 rolling jack extends this philosophy to the mobile lifting category, where most products prioritize function over refinement. The result is a rolling jack that not only lifts vehicles effectively but does so with a tactile quality that makes the daily experience noticeably better.

I have been using the GS-RBJ6 for four months in my well-equipped home shop, which already includes a fixed mid-rise lift for primary duty. The rolling jacks serve as my secondary lifting solution for vehicles parked outside the fixed lift bay and for quick-access tasks where deploying the fixed lift would be overkill. This complementary role is ideal for rolling jacks, which excel at fast deployment and flexible positioning rather than extended working sessions at maximum height.

The GS-RBJ6 operates on pneumatic power from your shop compressor, which aligns with the tool's target market of well-equipped home shops and professional garages. If you have invested in a quality compressor and air tool infrastructure, adding the GS-RBJ6 is a natural extension of your pneumatic tool ecosystem. If you lack shop air, this product is not for you — there is no electric alternative, and the pneumatic system is integral to the design rather than an option.

My testing has covered a range of vehicles including a BMW 5 Series, a Toyota 4Runner, a Honda CR-V, and a Chevrolet Corvette C7. Each vehicle presented different weight, clearance, and lift point characteristics, and the GS-RBJ6 handled all of them with the composed confidence that characterizes Greg Smith products. The rolling jack approach required some workflow adjustment compared to my fixed lift, but after the first week I developed an efficient routine that leverages the GS-RBJ6's mobility advantage effectively.

The GS-RBJ6 is visually and tactilely distinct from other rolling jacks I have used. The steel tubing is heavy gauge with precisely cut edges and clean, consistent MIG welds throughout. There is no splatter, no undercut, no porosity visible on any weld I can inspect. The powder coat finish is thick, even, and smooth — it has the look and feel of a high-end tool chest rather than a shop implement. The rubber lift pads are precision-molded from a compound that is slightly softer than generic pads, providing better grip and gentler contact with vehicle frame rails. Every detail communicates quality in a way that is immediately apparent when you first handle the product.

The caster assemblies are the best I have encountered on any rolling jack. Each unit rides on four oversized polyurethane wheels with sealed precision bearings that roll silently and smoothly on clean concrete. The swivel action is dampened — not free-spinning like cheap casters — which provides more precise positioning control and prevents the twitchy steering that can make lesser rolling jacks frustrating to maneuver. The lock mechanisms engage with a satisfying mechanical firmness and hold without any yield or creep under the full rated load.

The pneumatic cylinder is a high-quality industrial component with a large bore, hard-chromed rod, and what appears to be polyurethane seals. The air fittings are precision brass with proper thread sealant, and the supply hose is braided rubber with a working pressure rating well above the system requirements. The control valve is a well-machined unit with smooth action and positive centering — it returns to neutral cleanly and the up/down actuation requires deliberate effort, preventing accidental operation.

After four months of regular use, the GS-RBJ6 looks essentially new. The powder coat has resisted every chip and scratch that would have marred a thinner finish. The casters roll as smoothly as day one. The pneumatic system is leak-free and performs identically to when it was new. The safety locks engage with unchanged precision. This durability is the practical payoff of premium build quality — the investment in better materials and manufacturing pays dividends over years of ownership through sustained performance and appearance that lesser products cannot match.

The GS-RBJ6 operates on shop air at a recommended 90 to 120 PSI supply pressure. With my 60-gallon compressor delivering 18 CFM at 90 PSI, the jacks lift to full height in about seven seconds under a 4,000-pound load — fast enough that the vehicle seems to rise in one continuous, rapid motion. The pneumatic operation feels completely different from electric-hydraulic systems, which have a gradual, steady ascent. The air-powered lift is more immediate and responsive, almost like inflating a balloon, and the control valve allows precise speed modulation by varying how far you open the valve.

Lowering is equally well-controlled. The exhaust valve meters the air release to provide a smooth, controlled descent that you can stop at any height by returning the valve to neutral. The safety locks can be engaged at any height during descent, which allows you to set the vehicle at a specific working height rather than only at full extension. This flexibility is useful when you want a particular component at a comfortable working height rather than the maximum rise.

The daily workflow with the GS-RBJ6 typically involves wheeling both units to the target vehicle, positioning them under the front or rear lift points, locking the casters, connecting the air supply, and lifting. Total deployment time is approximately two to three minutes once you are familiar with the process. Air supply management is the one additional consideration versus electric lifts — you need an air hose long enough to reach your working area, and the hose must be routed to avoid trip hazards and tire contact. I use a ceiling-mounted retractable reel that solves both issues cleanly.

The 30-inch maximum rise height provides comfortable creeper-based working access and allows seated work on brake and wheel components. It falls short of the 42 to 48 inches offered by fixed mid-rise lifts, which is the fundamental trade-off of the mobile format. For quick-service tasks that represent the bulk of my secondary-lift usage — oil changes, brake inspections, fluid checks, and undercarriage inspections — the 30-inch height is perfectly adequate and the mobile convenience is worth the height trade-off.

The GS-RBJ6's safety system follows the same mechanical-lock approach used across the scissor lift category, with execution quality that reflects Greg Smith's engineering standards. The safety lock pins are large-diameter hardened steel components that engage with precision-machined slots in the scissor structure. The engagement springs are heavy-duty units that provide firm, positive seating. The lock release mechanism requires lifting a weighted bar with deliberate force — this is not something that can be bumped or jostled into releasing accidentally.

Caster lock security is critical for rolling jacks, and the GS-RBJ6's caster locks are excellent. Each lock engages both the wheel rotation and the swivel, immobilizing the unit completely when locked. The lock actuation requires deliberate foot pressure on the lock lever, and the disengagement requires a different foot motion on a separate release pedal. This two-motion design prevents accidental unlocking during work. I verified the caster lock security by applying lateral force to the locked units with a loaded vehicle — there was zero detectable movement.

The combination of caster locks and scissor safety locks creates a dual-layer security system for the rolling format. Even if a caster lock were to fail, the scissor locks would hold the vehicle at its elevated height. And even if a scissor lock somehow failed, the caster locks would prevent the unit from rolling while the hydraulic system maintained the load. This belt-and-suspenders approach is appropriate for mobile equipment where the additional variable of rolling capability needs to be addressed in the safety design.

I performed my standard safety test — full lift, lock engagement, air pressure release — and the vehicle settled approximately 3/16 inch onto the mechanical locks and held firmly. Working underneath the locked vehicle felt secure and stable, with no movement or concern during four months of regular use. The GS-RBJ6's safety performance is consistent with what I expect from a quality scissor-based product, with the added confidence that comes from Greg Smith's overbuilt approach to every component in the safety chain.

At $2,499 per pair, the GS-RBJ6 commands a premium over competing rolling jacks from Atlas ($1,799) and positions close to the BendPak RBJ6000 ($2,399). The $700 premium over Atlas buys substantially better build quality, quieter operation, smoother casters, and a five-year structural warranty versus two years. The $100 premium over BendPak buys what I perceive as slightly better weld quality and caster refinement, though the BendPak is also an excellent product with stronger brand recognition in the consumer market.

The value question for the GS-RBJ6 depends on how much you value build quality as an independent product attribute. If a rolling jack that works reliably at the lowest possible price is your goal, the Atlas MR6K delivers adequate performance at $1,799. If you want premium quality from a recognized brand with strong consumer market presence, the BendPak RBJ6000 delivers that at $2,399. If you want the absolute best build quality available in a rolling jack and are willing to pay for it, the GS-RBJ6 is the product that answers that need.

Compared to fixed scissor lifts at similar prices — the Dannmar DMR-6 at $2,499 or the Forward FSL-6 at $2,199 — the rolling jacks offer less rise height but more flexibility. If your garage has a fixed work bay and you primarily service one vehicle at a time, a fixed mid-rise lift provides better capability. If your garage handles multiple vehicles or you need the ability to lift anywhere, the rolling jacks provide mobility that fixed lifts cannot match. The choice is fundamentally about workflow rather than capacity.

The five-year structural warranty is a significant differentiator that aligns with the premium positioning. Greg Smith clearly expects the GS-RBJ6 to last well beyond the warranty period, and the construction quality supports that expectation. The two-year component warranty covers the pneumatic system and casters, which are the most likely replacement items during normal operation. For a buyer planning to own the equipment for a decade or more, the longer warranty and superior build quality reduce the total cost of ownership relative to products that may need earlier replacement.

The Greg Smith GS-RBJ6 is the finest rolling jack I have used, and it occupies a unique position in the market as the premium choice for buyers who appreciate exceptional equipment. Its build quality is genuinely superior to every competitor I have handled, and this superiority translates into a daily experience characterized by smooth operation, quiet performance, precise positioning, and lasting durability. If you view your garage tools as long-term investments rather than disposable purchases, the GS-RBJ6 is a tool that rewards that philosophy.

I recommend the GS-RBJ6 for experienced home mechanics and small shop operators who have shop air available and want the best possible mobile lifting solution. It is particularly well-suited for multi-vehicle garages where the rolling capability saves time and eliminates vehicle shuffling. The premium build quality also makes it appropriate for customers who simply want the best equipment available and are willing to pay a modest premium for tangible quality improvements.

Buyers who should consider alternatives include those without shop air — the pneumatic requirement is non-negotiable and there is no electric option. Budget-conscious buyers should look at the Atlas MR6K, which provides functional rolling jack capability at $700 less. And buyers who need maximum rise height should look at fixed mid-rise lifts instead, as no rolling jack in the market matches the 42 to 48 inches that fixed platforms achieve.

Four months of ownership have reinforced my initial impression that the GS-RBJ6 is a special product. It handles the same basic task as its competitors — lifting vehicles — but does so with a level of refinement that makes the experience noticeably more enjoyable. In a category where most products are adequate, the GS-RBJ6 is excellent. For the buyer who can appreciate and afford that distinction, it is the clear choice.