JECQCUPG RUI 04: problems, parts and running costs

Checked: 2026-10-05

Summary

The trouble with this chair is documentary rather than mechanical: no exact-model owner thread exists, so nobody has established how the pocket springs, the PU covering or the gas lift age, and the load rating is published two ways, 150 kg / 330.7 lb against 180 kg and a 400-lb headline. Running cost is effectively nothing, because the chair needs no power and has no filters, pods or consumables; the only possible outlay is replacement casters, a gas lift or upholstery if compatible parts ever appear, and no source prices them. At $80 or below the flat 20.1-inch seat, the pocket-spring cushion and the 135° recline are worth the gamble; $81-95 is fair money, because better-documented chairs sit in the same band; above $100 you are paying for missing support and parts.

Common problems and fixes

Load rating is published two ways — exact-ASIN retailer data and the listing title say 180 kg, about 397 lb and 400 lb, while another exact-ASIN store’s body copy says tested to 150 kg / 330.7 lb. No owner failure is attached to this; the effect is that the rating cannot be verified, so plan for 150 kg / 330.7 lb and do not pay extra for the roomier headline. No warranty term is published at all, so nothing would cover a failure under a load you assumed was fine. [1][3][6]
Armrests have no independent adjustment — they tilt in sync with the backrest, and no independent armrest height or depth movement is evidenced anywhere for this model, so the arm angle is locked to whichever of the three recline positions, 90°, 110° or 135°, you sit in. There is no fix; the workaround is to match your desk height to the arm angle the recline gives you. Not a warranty item, because no warranty term is published. [1][2]
No manual, no certification, no gas-lift class — no manufacturer manual, BIFMA or ANSI certification, gas-lift class or caster diameter could be found, so assembly and adjustment are undocumented. Workaround only: re-check the fasteners, casters and base joints periodically, which are the normal inspection points on this metal frame. No maintenance schedule and no warranty length are published, so there is nothing official to point at when something loosens. [1][2][7]
Nothing is replaceable through the brand — no exact-model parts catalog, no replacement armrest, cushion, base or gas-lift program and no support or manual portal surfaced; the brand’s trademark record names its owner but the brand itself offers no parts channel. A snapped caster, a sagging gas lift or a torn covering is therefore a replace-the-chair event unless you can find a compatible part elsewhere. Repairability is unknown rather than proven poor, but treat it as poor for planning purposes. [1][2][7]
Two listing names for the same chair — exact-ASIN retailer mirrors call it RUI 04 while the current US catalog title calls it RJ091901, and no document maps the two. Practical effect: search both identifiers when hunting a manual or a spare. The published in-box contents are only a cushion plus assembly tools, so there is no parts list to order against. [1][5]
Dimensions are published twice and one field is wrong — the assembled size is 27.64 x 27.64 x 46.41 in (70.2 x 70.2 x 117.9 cm) at 41.4 lb (18.78 kg), but the same retailer record also exposes 55.74 x 28.74 x 28.74 in. Measure your space against the 27.64 x 27.64 x 46.41 in figure; the 55.74 in field is packaging metadata, not the chair. [1][2]
Seat height and user range are guesses — the only height figure is a claimed 3.9 in (10 cm) of seat-height travel, with no minimum or maximum seat height from the floor published, and the listing copy alternates between a 120-190 cm and a 120-185 cm user range. If you are near either end of that range, get a floor-to-seat measurement before buying; a seat that cannot reach your desk height is not fixed by reclining. [1][4]
PU covering must be wiped, not soaked — the upholstery is faux leather over a foam cushion with pocket springs on a metal frame, and the care guidance in the sources is to wipe it rather than soak it. No replacement cover or re-upholstery service appears anywhere, so a split covering ends the chair’s life. [1][2]

Parts and consumables

No replaceable parts or consumables reported.

Casters — no part number, no price and no replacement interval in any source, and compatibility is unknown, so treat a dead caster as a retirement reason rather than a spare to stock. [1]
Gas lift — no class, no part number and no price published, so a seat that sinks cannot be planned for, and there is no manufacturer channel to buy one from. [1][7]
Armrests, backrest, seat cushion, headrest and lumbar cushions — the mirrors describe removable headrest and lumbar cushions, but no spare listing, part number or replacement interval exists for any of them. [1][2][5]

Yearly running cost

Zero, and there is nothing to compute: the chair needs no power and the sources specify no filters, pods, fluids or subscription. The only cost that can appear later is a replacement caster, gas lift or upholstery, and none of those is priced or confirmed as available, so budget for it as a risk rather than as a yearly figure. Electricity is not part of the running cost at all.

When it is a good buy

$80 or below: good buy. The 20.1-inch flat seat, the pocket-spring and foam cushion and the 90°/110°/135° recline are real hardware for the money.
$81-95: fair, not compelling. Better-documented chairs with established ratings sit in the same band, and this one ships without a warranty term or a parts route.
Above $100: weak value, because past that point the missing support and parts story is what you are paying for.

The Tiendamia exact-ASIN mirror carried a US-origin reference price of $79.99 in October, and the figure in the previous article was $89.99, which is why this page treats $80 as the line. Nearby competition runs from $69.99 to $94.99 for footrest and pocket-spring chairs, with GTPLAYER models at $69.96-85.18, so the chair is cheap in company rather than unique at that price. Alternatives: in the $81-95 band, take a better-documented competitor instead of this one, because the deciding factor is a written warranty and a real parts channel, not another 10° of recline; below $80, the flat 51 cm wingless seat and the linked armrests are the reasons to pick this over a side-bolstered racing seat at the same money; and if you need a documented load rating or a parts program, pick a brand that publishes both rather than gambling on the 400-lb headline. [3][5][8]

JECQCUPG RUI 04: problems, parts and running costs

Summary

Common problems and fixes

Parts and consumables

Yearly running cost

When it is a good buy

Sources