Perguntas frequentes sobre dobradiças de porta
What is a heavy duty door hinge?
A heavy duty door hinge is a butt hinge with thicker leaves (usually 3–6 mm), a larger size (4.5–5 in) and ball bearings in the knuckle. It is used on heavy, wide or frequently used doors such as entrance, commercial, steel and fire-rated doors.
How many hinges does a door need?
Utilize 2 dobradiças em portas de até 1,5 m de altura, 3 dobradiças até cerca de 2,3 m e 4 dobradiças até cerca de 3 m; depois, adicione uma por cada 750 mm adicionais. Adicione uma dobradiça em portas largas ou pesadas e em portas com mola de fecho.
What size hinge do I need for a door?
Most 35–40 mm interior doors use 3.5 in (89 mm) hinges, standard 44 mm doors use 4 in or 4.5 in (102–114 mm) hinges, and heavy or 50 mm+ doors use 5 in (127 mm) heavy duty hinges.
Quanto peso pode suportar uma dobradiça de porta?
It depends on size, leaf thickness, bearings, number of hinges and fixing. As a guide, three 4 in ball bearing hinges with 2.5–3 mm leaves suit doors up to about 60 kg, and four 5 in heavy duty hinges with 4–6 mm leaves suit doors up to about 120–160 kg. We confirm the load for each model.
Is 304 or 201 stainless steel better for door hinges?
SS304 resists corrosion better because it contains more nickel, so use it for exterior, bathroom, coastal and humid areas. SS201 costs less and is suitable for dry interior doors. HIPAD makes hinges in both grades.
Are ball bearing hinges better than plain hinges?
Sim, para a maioria das portas. Os rolamentos de esferas reduzem o atrito e o desgaste no nó, permitindo que a porta oscile silenciosamente e não ceda tão rapidamente. Utilize dois rolamentos para portas interiores e quatro para portas comerciais e de utilização intensiva.
What hinges are used on aluminum and uPVC doors?
Profile doors use surface-mounted 3D adjustable hinges, two-wing slot hinges or lift-off aluminum hinges that fit the profile, instead of mortised butt hinges. They can be adjusted after hanging and are color-matched to the profile.
Qual é a quantidade mínima de encomenda (MOQ) para dobradiças de porta?
MOQ starts at 500 pcs for stainless ball bearing hinges, 1,000–2,000 pcs for aluminum and 3D hinges and 5,000 pcs for uPVC butt hinges. Samples take 3–7 days and production 20–25 working days.
Can you make hinges to our drawing with our logo?
Sim. Fabricamos dobradiças com as suas dimensões, espessura, padrão de furação, rolamentos, material e acabamento, além de estampar o logótipo e disponibilizar embalagens de marca própria, mesmo para pequenas quantidades.
Last updated: October 2026 · Reviewed by Allen, Technical Engineer, HIPAD