The four most common door lock categories are cylindrical or tubular locks, Mortise Locks, deadbolts, and electronic or smart locks. Each serves a different combination of security, access control, installation depth, appearance, and serviceability.
A passage latch without a locking function should not be confused with an entrance lock, and a connected smart lock is not automatically more resistant to physical attack than a properly specified mechanical system. Door type and application must guide the selection.
| Lock Type | Basic Structure | Common Applications | Main Procurement Checks |
|---|---|---|---|
| Cylindrical or tubular lock | Chassis or latch installed through bored door preparation | Homes, bedrooms, offices, internal doors | Backset, door thickness, function, handing, trim |
| Mortise lock | Rectangular lock case recessed into door edge | Hotels, commercial buildings, premium residences | Case size, centers, backset, cylinder, faceplate, door preparation |
| Deadbolt | Solid bolt operated separately or within a lockset | Entrance doors and security upgrades | Bolt projection, cylinder type, strike reinforcement, egress |
| Electronic or smart lock | Mechanical locking parts combined with electronic access control | Hotels, homes, offices, managed properties | Credentials, power, override, audit, cybersecurity, mechanical compatibility |
Cylindrical and tubular locks are widely used because bored-door preparation can make installation relatively efficient. The handle or knob operates a spring latch, and different functions provide passage, privacy, storeroom, classroom, or entrance control.
These locks are not all built to the same duty level. High-traffic commercial doors require different cycle performance, construction, and servicing capability from a light residential bedroom lock.
Before ordering, confirm the function carefully. Two products can look identical while responding differently from the inside, outside, or after key operation.
A mortise lock places a substantial case inside a prepared pocket in the door edge. The case may combine a latch, deadbolt, follower, and other mechanisms.
Mortise systems are common in hotels, offices, public buildings, and premium residential projects because they support many functions and trim designs. Their performance depends on accurate door preparation and dimensional matching.
Key dimensions include backset, distance between the spindle and cylinder, case size, faceplate size, spindle format, cylinder type, and door thickness. Our door lock system collection includes European mortise cases, roller-latch designs, narrow lock bodies, and locks for sliding doors.
A deadbolt uses a solid bolt that does not retract through simple spring pressure. It is commonly installed above a latch lock or incorporated into a mortise system.
Single-cylinder versions normally use a key outside and a thumb turn inside. Double-cylinder versions require a key on both sides, but they can delay emergency exit and may be restricted by local rules. Egress requirements must be checked before specifying them.
Strike attachment and frame construction are critical. A strong bolt connected to a weak frame cannot deliver the expected protection.
Electronic locks may use keypads, cards, mobile applications, fingerprints, facial recognition, or networked access platforms. Many retain a mechanical lock body and emergency override.
They provide convenience and access-management options, but introduce additional considerations:
Battery life and low-power warning
Administrator permissions
Credential deletion
Emergency mechanical access
Firmware support
Encryption and password policy
Network reliability
Compatibility with door preparation
Data and privacy requirements
Smart functionality should be evaluated alongside the mechanical cylinder, bolt, latch, strike, and door construction.
Cylindrical locks suit standardized bored-door programs. Mortise locks are useful when project-grade functions, trim flexibility, and integrated mechanisms are required. Deadbolts add controlled bolt security, while smart locks support managed or keyless access.
Hotel rooms may prioritize audit and credential management. Apartment entrances need security and reliable egress. Internal offices may focus on master-key control, while public buildings require hardware compatible with accessibility and fire-safety rules.
Our factory manufactures and supplies mortise locks, door cylinders, smart locks, Door Latches, stainless steel handles, hinges, door bolts, guards, viewers, and related architectural hardware. Since 1993, we have developed OEM and ODM products for door factories, building projects, hotels, airports, shopping centers, and international distributors.
As a commercial-grade Door Lock System manufacturer, we can coordinate lock cases, cylinders, handles, finishes, door preparation dimensions, keying plans, and packaging. CNC machining, digital milling, forming, pipe bending, and welding equipment support both standard product supply and customized hardware development.
A lock must work with the door leaf, frame, strike, hinge, closer, handle, cylinder, and access requirements. Selecting one component without checking the complete opening can cause interference, difficult operation, or noncompliance.
The four common lock types provide a useful starting point. The final specification should be based on door use, traffic, security risk, emergency exit, maintenance capacity, and replacement-part availability.
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