A heavy duty door hinge is a butt hinge with thicker leaves (usually 3–6 mm), a larger size (4–5 in) and ball bearings in the knuckle, made to carry heavy or frequently used doors without sagging. HIPAD manufactures door hinges in SS304 and SS201 stainless steel, aluminum alloy, zinc alloy and steel, from 2 to 5 in and 2 to 6 mm thick, with 180° opening. Door factories, aluminum and uPVC fabricators and hardware distributors in 60+ countries order them from us as standard models or made to drawing.
A door hinge joins the door leaf to the frame and lets it swing. The common type is the butt hinge: two flat leaves, one recessed into the door edge and one into the frame, joined by a pin through a row of knuckles. Its size is given as height × open width, for example 4 × 4 in (102 × 102 mm).
A hinge becomes heavy duty through four things together: thicker leaves, a larger size, ball bearings or bearing washers between the knuckles, and enough hinges per door. Leaf thickness alone is not a load rating. The pin, knuckles, screws and the material the door is made of all decide how much the hinge can carry.
In Spanish-speaking markets door hinges are bisagras para puertas (bisagras de acero inoxidable in stainless steel); in Brazil they are dobradiças para porta or dobradiças de inox.
Kurze Antwort: use ball bearing butt hinges for wooden, steel and commercial doors; 3D adjustable or two-wing hinges for aluminum and uPVC profile doors; lift-off hinges where the door must come off without unscrewing; and self-closing hydraulic hinges where the door must close on its own. The reference numbers below are our product IDs; quote them in your inquiry.
SS304 or SS201 butt hinges with two or four ball bearings, 2, 3, 4 or 5 mm leaves, 180° opening. For hotels, apartments, villas, offices and workshop doors. Ref. 1601900522697, 1601900510826, 1601900651005 · MOQ 500 pcs.
Flat SS butt hinges, 6 holes, 2 mm leaves, ball bearing knuckle, 2 in and 3 in. For interior doors, cabinet doors and light industrial covers. Ref. 1601696151184 · MOQ 100 pcs.
Surface-mounted hinges for aluminum and uPVC doors that adjust in height, side and compression after hanging. Aluminum, zinc alloy or stainless steel; anodized or powder coated. Ref. 1600790558451 · MOQ 1,000 pcs.
Flag-type hinges that let the door lift off its pin. Standard and extended versions in aluminum alloy, 2 mm and 5 mm, 180°. Ref. 1601710692041, 1601298589184 · MOQ 1,000 bags.
Large aluminum hinges with two wings that fit the profile groove of thermal-break doors and casement windows. Color and size to your profile. Ref. 1600778466471 · MOQ 2,000 pcs.
European-style butt hinges for uPVC and aluminum doors in white, black, brown and gray; steel, aluminum, zinc alloy or stainless steel. Ref. 1601292949474 · MOQ 5,000 pcs.
Zinc alloy double-bearing hinges (5 mm, 180°, adjustable) and stainless hinges for casement windows. See also the window hardware guide.
Wall-to-glass and glass-to-glass hinges, 90°, 135° and 180°, for 8–12 mm tempered glass.
Floor springs, patch fittings and pivots for frameless glass entrance doors, where butt hinges cannot be used.
Kurze Antwort: most interior doors 35–40 mm thick use 3.5 in (89 mm) hinges; standard 44 mm doors use 4 in or 4.5 in (102–114 mm) hinges; heavy, wide or 50 mm+ doors use 5 in (127 mm) heavy duty hinges. The size is height × open width; leaf thickness is chosen separately by door weight.
HIPAD 3 in ball bearing butt hinge: 76 × 75.7 mm, screw holes Ø6.6 mm.
| Nominal size (H × W) | Metric (mm) | Leaf thickness | Screw holes per leaf* | Typical door |
|---|---|---|---|---|
| 2 × 2 in / 2.5 × 2.5 in | 51 × 51 / 64 × 64 | 1,5-2 mm | 2–3 | Cabinets, small hatches, furniture |
| 3 × 3 in | 76 × 76 (HIPAD drawing 76 × 75.7) | 2–2.5 mm | 3 | Light interior doors up to 30 mm thick, cupboard doors |
| 3.5 × 3.5 in | 89 × 89 | 2-3 mm | 3 | Interior doors 35–40 mm thick, up to about 800 mm wide |
| 4 × 3 in / 4 × 4 in | 102 × 76 / 102 × 102 | 2.5–3 mm | 4 | Standard interior and apartment doors, 35–44 mm thick |
| 4.5 × 4.5 in | 114 × 114 | 3–4 mm (heavy: 4–4.8 mm) | 4 | 44 mm entrance, office and commercial doors |
| 5 × 4.5 in / 5 × 5 in | 127 × 114 / 127 × 127 | 3–4 mm (heavy: 4–6 mm) | 4–5 | Heavy, wide or 50 mm+ doors, steel and fire-rated door sets |
| Dicke der Tür | Door width | Hinge height |
|---|---|---|
| 35 mm (1-3/8 in) | Up to 800 mm | 3.5 in (89 mm) |
| 35 mm (1-3/8 in) | Over 800 mm | 4 in (102 mm) |
| 44 mm (1-3/4 in) | Up to 900 mm | 4.5 in (114 mm) |
| 44 mm (1-3/4 in) | 900–1200 mm | 5 in (127 mm), heavy weight |
| 50–63 mm (2–2-1/2 in) | Up to 1050 mm | 5 in (127 mm), heavy weight |
Kurze Antwort: use 2 hinges on doors up to 1.5 m high, 3 hinges up to 2.3 m and 4 hinges up to 3 m, then add one for every extra 750 mm. Doors over about 60 kg need ball bearing hinges of at least 4.5 in with 3 mm+ leaves; doors over about 100 kg need 5 in heavy duty hinges with 4–6 mm leaves, four bearings and a fourth hinge.
| Door height | Hinges per door |
|---|---|
| Up to 1500 mm (60 in) | 2 |
| 1500–2286 mm (60–90 in) | 3 |
| 2286–3048 mm (90–120 in) | 4 |
| Over 3048 mm | Add 1 per extra 750 mm (30 in) |
| Door mass | Recommended hinge (per door, 3 hinges unless noted) | EN 1935 test door mass for reference |
|---|---|---|
| Up to 20 kg | 3–3.5 in, 2 mm, plain or 2 bearings | Grade 4: 20 kg |
| 20–40 kg | 3.5–4 in, 2–2.5 mm, 2 ball bearings | Grade 7: 40 kg |
| 40–60 kg | 4 in, 2.5–3 mm, 2 ball bearings | Grade 10: 60 kg |
| 60–80 kg | 4–4.5 in, 3 mm, 2–4 ball bearings | Grade 11: 80 kg |
| 80–100 kg | 4.5 in heavy duty, 3–4 mm, 4 ball bearings | Grade 12: 100 kg |
| 100–120 kg | 5 in heavy duty, 4 mm+, 4 ball bearings, 4 hinges | Grade 13: 120 kg |
| 120–160 kg | 5 in heavy duty, 4–6 mm, 4 ball bearings, 4 hinges, or a pivot / floor spring | Grade 14: 160 kg |
| Material | Korrosionsbeständigkeit | Am besten geeignet für |
|---|---|---|
| SS304 stainless steel | High (about 18% chromium, 8% nickel) | Entrance and exterior doors, bathrooms, coastal and humid areas, hotels and hospitals |
| SS201 stainless steel | Medium (less nickel, more manganese) | Dry interior doors and cost-sensitive projects |
| Aluminum alloy | Good when anodized or powder coated | Aluminum profile doors, lift-off and two-wing hinges; color-matched to the profile |
| Zinklegierung | Good when plated or coated | Die-cast window and profile hinges with adjustment |
| Steel (plated) | Low to medium, depends on plating | Industrial and steel doors indoors |
HIPAD makes stainless steel hinges in both SS304 and SS201. State the grade on your order; we mark it on the packing so it can be checked on arrival.
| Knuckle type | Use |
|---|---|
| Plain (no bearing) | Light, low-traffic doors and cabinets |
| 2 ball bearings | Interior and apartment doors; quiet, smooth swing |
| 4 ball bearings | Heavy duty: entrance, commercial and steel doors, doors with closers |
| Self-closing hydraulic | Doors that must close by themselves and close gently; our HDH199 is rated 40 kg per hinge, HDH200 and HDH201 come in 4 in and 5 in |
| Lift-off (flag) | Doors that must be removed without unscrewing |
| Door | Scharnier | Size and thickness | Hinges per door |
|---|---|---|---|
| Interior wooden door, 35–40 mm | Stainless butt hinge, 2 bearings | 3.5–4 in, 2–2.5 mm | 2–3 |
| Apartment or hotel room door, 40–44 mm | SS304 ball bearing butt hinge | 4–4.5 in, 3 mm | 3 |
| Entrance, office or commercial door | Heavy duty SS304, 4 bearings | 4.5–5 in, 3–4 mm | 3–4 |
| Steel, industrial or workshop door | Heavy duty stainless or steel hinge, welded or bolted | 5 in, 4–6 mm | 3–4 |
| Aluminum profile door | 3D adjustable, two-wing or lift-off aluminum hinge | To the profile | 2–3 |
| uPVC door | uPVC butt or 3D hinge with reinforcement screws | To the profile | 3 |
| Frameless glass door | Not butt hinges: floor spring, patch fittings or glass hinges | See glass door hardware | — |
| Problem | Mögliche Ursache | Korrektur |
|---|---|---|
| Door sags or rubs the frame at the top | Hinges too small or too few; loose top screws | Add a hinge, step up a size, use longer screws into the frame |
| Squeaking | Plain knuckle wearing | Change to ball bearing hinges |
| Door springs back when closed | Hinge recess too deep (hinge-bound) | Shim the leaf to sit flush |
| Rust spots | SS201 or plated steel in a wet area | Use SS304 |
| Profile door out of square | Hinge not adjusted | Use 3D adjustable hinges and set height and side |
HIPAD started in 2000 with bearings and rollers, and bearing know-how is what makes a ball bearing hinge run smoothly for years. Today we make hinges together with locks, handles, rollers and door closers, so door factories and distributors can buy a matched set from one supplier.
HIPAD is ISO 9001 zertifiziert, und die entsprechenden Produkte tragen CE, GS und CSA C-UL certification; certificates per model on request. SGS or BV third-party inspection is available.
| 1. Inquiry | Door data or drawing; we propose a model |
|---|---|
| 2. Proben | 3–7 days for existing models |
| 3. Produktion | 20–25 working days |
| 4. Versand | FOB Qingdao or any China port · 30% deposit, 70% before shipment |
| Begriff | Bedeutung | Auch bekannt als |
|---|---|---|
| Butt hinge | Two leaves joined by a pin, recessed into the door edge and frame | Mortise hinge, bisagra de libro, dobradiça |
| Ball bearing hinge | Butt hinge with ball bearings between the knuckles | Bearing hinge, bisagra con rodamiento |
| Flat hinge | Thin butt hinge for light doors and cabinets | Bisagra plana |
| Lift-off hinge | Hinge that lets the door lift off the pin | Flag hinge, removable hinge |
| Hydraulic hinge | Self-closing hinge with a damper | Self-closing hinge, bisagra hidráulica, dobradiça hidráulica |
| 3D adjustable hinge | Profile-door hinge adjustable in three directions | 3D hinge |
| Knuckle | Round part of the hinge that holds the pin | Barrel |
| Rückversatz | Distance from the door face to the edge of the hinge recess | — |
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.
Use 2 hinges on doors up to 1.5 m high, 3 hinges up to about 2.3 m and 4 hinges up to about 3 m, then add one for every extra 750 mm. Add a hinge on wide or heavy doors and doors with closers.
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.
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.
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.
Yes, for most doors. Ball bearings reduce friction and wear in the knuckle, so the door swings quietly and does not sag as quickly. Use two bearings for interior doors and four for heavy duty and commercial 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.
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.
Yes. We make hinges to your size, thickness, hole pattern, bearings, material and finish, and add logo stamping and private-label packing, even for small quantities.
A door and window hardware factory since 2000, supplying door factories, aluminum and uPVC fabricators, distributors and contractors in 60+ countries. Our commitment includes:
Send the door size, weight and material, or your drawing. We reply within 24 hours with a matched hinge and a factory price.
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