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Hero image: AI-generated editorial illustration of a pendulum-squat setup in a working garage. Generic equipment, not an exact PS01 photograph or fit diagram.
Choose your next step
Want rail-guided squats? Check the dedicated Titan model after the fit checks below. Want both squats and leg presses? Use the combo guide.
Check Titan Linear Hack SquatA pendulum squat carries the supported user around a pivot. A linear hack squat moves its carriage along rails. Both guide the movement, but the exact pivot, rail angle, pads and stops determine whether the machine fits you. Neither name establishes a better outcome for every lifter.
Scroll the table to see every column.
| Model / path | Published fit and dimensions | Loading and missing evidence | Purchase decision |
|---|---|---|---|
| GMWD PS01, current PS01 variant DG-KF27PS01-SBS-B; pivoting arm | 77 × 43 × 62 in; footboard 23.6 × 24 in at 30°/35°/40°; five limiter positions, 18–23.6 in range. | Maker lists 33 lb starting weight, 800 lb capacity and 2-in plates. The capacity definition, usable sleeve length and current manual were not established. Manufacturer specifications | Listed $899.99 before tax, with lower-48 free-shipping claim and three boxes. Confirm delivery service, assembly, exact manual and user fit before ordering. No approved direct affiliate route verified. |
| Titan Plate-Loaded Linear Hack Squat; SKU 401231; straight 35° rails | 46.75 × 60.5 in footprint; 45.5 in height; adjustable backrest. | 700 lb carriage rating; two 9.75-in sleeves, 50 mm diameter. Unloaded starting resistance is unverified; 190 lb machine mass is not the starting load. Manufacturer specifications | Dedicated hack squat, without a leg-press mode. Current item $974.99; plates/collars and full loading access extra. Maker-linked manual route |
| Bells of Steel Pandemonium; alternative pivoting design | Removable back pad and included extender feet; exact use envelope must follow the chosen configuration. | Includes a counterbalance arm, demonstrating why pendulum machines are not mechanically interchangeable. No equivalent resistance calculation established. Manufacturer specifications | Research comparator only; do not transfer its counterbalance or other exercise features to PS01. |
Why the plates do not measure equivalent resistance
A plate’s mass is only one input. On a pivoting arm, gravitational torque depends on the load’s distance from the pivot and its changing angle; the user and pads act at different lever distances. A counterbalance can offset part of that torque, and its effect can change through the movement. On rails, incline, carriage mass and friction influence the force along the track. These are mechanical explanations, not measured force curves for the products above.
There is no defensible universal conversion such as “one plate on pendulum equals two on hack.” Start with the exact machine’s documented unloaded setup and follow its instructions. Record progression on that same configuration rather than comparing plate totals between gyms.
Fit the person before reserving floor space
Check pad-to-footplate distance at your intended bottom and top positions, back and shoulder support, handle reach, and whether the available stop positions end the movement appropriately for each user. GMWD’s advertised 4 ft 11 in–6 ft 2.8 in height range does not verify individual proportions. An adjustment count cannot establish usable depth. Do not drill new stop holes or modify a limiter to solve a fit problem.
Mark the whole machine outline with tape, then add plate loading and removal access, entry and exit, the moving arm or carriage envelope, and room for the largest intended user. Check ceiling/garage-door hardware at the highest moving point. Published frame dimensions alone are insufficient.
When to buy either machine—and when to keep what you own
- Compare a pendulum when you specifically want a supported pivoting squat and can verify that model’s stops, range and loading arrangements.
- Compare a hack squat when you want a rail-guided carriage; compare a combo separately if leg presses are also a planned use.
- Keep your existing setup when a barbell, suitable belt squat or other owned equipment already supports your program. Novel movement alone does not recover the machine’s cost or floor space.
Our leg-press and hack-squat buying guide compares combo and dedicated routes. For a different pivoting layout, use the leverage-squat comparison. To use owned equipment first, see leg-press alternatives.
Pendulum squat machine ordering checklist
PS01 is included here because choosing the mechanism and verifying the exact unit are one buying decision. A separate near-duplicate shopping list would not resolve its current evidence gaps.
Request the manual matching variant 52572982509843 and SKU DG-KF27PS01-SBS-B, the definition of the 800 lb figure, allowable load per sleeve, usable sleeve length, counterbalance configuration, anchoring requirements and full operating clearances. Confirm current freight/parcel service, unloading obligations, assembly hardware/tools, warranty exclusions and return freight. The page’s “gross weight” of 287 lb is not a measured machine mass.
Total cost is the selected machine + required plates/collars + appropriate flooring + delivery or unloading charges + assembly + tax. Do not assume a three-box shipment includes inside placement. We do not adopt manufacturer promises about pain relief, injury recovery, joint protection or superior growth.
Sources and comparison method
By WOD Fever Editorial. Research reviewed October 27, 2026 using the linked manufacturers’ specifications, product information and public variant data. We have not owned, tested or measured these products. Prices and order messages are dated observations, not delivered quotes. Confirm the selected configuration, current manual, tax, delivery and return costs before ordering. Manufacturer specifications are not independent performance tests.