Yes, the hub is identical
Same 5x120 PCD and same 60.1 mm centre bore: wheels from Lexus TX bolt on and centre on Toyota Century without rings. You still need to check the offset and tyres, detailed below.
≈: width estimated from the original tyre size.
Wheel by wheel: offset and tyres
Each original wheel from Lexus TX is compared with the one from Toyota Century of the same diameter: how much closer the wheel gets to the shock absorber or how far it sticks out of the wheel arch, and whether the tyre keeps the same overall diameter.
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≈8Jx20 ET25 · 255/55R20 — Check on the car
Compared with the original ≈7Jx20 ET40 on Toyota Century: shock absorber side −2.3 mm, wheel arch side +27.7 mm, tyre diameter +7.6 % : fit it with the original tyre size of Toyota Century (225/50R20), not that of Lexus TX.
Comparison for guidance only (estimated width). Check in detail
Before fitting the wheels
An identical hub is not enough: offset, width and diameter change the position of the wheel, and larger calipers can touch a smaller wheel. Original wheels often use bolts or nuts with a specific seat: keep the fixings intended for the wheel, with the thread of Toyota Century (Ecrous - 14x1.50), tightened to the torque shown on its vehicle page. Finally, check that the size is among the approved fitments for your vehicle. This comparison is for guidance only: have the fitting approved by a professional.
And the other way round: wheels from Toyota Century on Lexus TX?