Features & Functions

  • BSEN 1303-2005 performance tested.
  • Quality solid brass body and plug
  • 30 degree offset cam inhibits knock through
  • Anti-pick drivers
  • Anti-drill pins.
  • Anti-pick key profile
  • Large range of key combinations
  • Cylinders available in a variety of finishes.

1. Clutch

2. Cam

3. Clip Rings

4. Barrel

5. Spacer (long cylinders only)

6. Housing

7. Key Pins

8. Middle Pins

9. Springs

10. Closing Pins

11. Anti-drill Pin

Product Range

The EuroArt range of euro profile cylinders is made up of three main categories or levels

CYC contract series :

6 Pin economy cylinders

CYD architectural series :

6 Pin high-security cylinders with 4 anti-drill pins.

CYS Supreme series :

6 pin high-security with dimple keys.

CYS flagship series :

10 Pin high-security with two line pins. This is the flagship of EuroArt cylinder range offering the advance V-Shaped flat key profile section, and doubling the pins where high security is essential.

BS EN1303 Cylinders for locks

1. Category of use

One category is identified.

Grade 1:

For use by people with a high incentive to exercise care and with a small chance of misuse.

2. Durability

Three grades are identified according to the number of test cycles achieved

Grade 4:

25 000 Cycles

Grade 5:

50 000 Cycles

Grade 6:

100000 Cycles

3. Door mass

One grade is identified:

Grade 0:

No requirement

4. Fire resistance

Two grades are identified:

Grade 0:

Not suitable for fire/smoke resistant door assemblies

Grade 1:

Suitable for fire/smoke resistant door assemblies subject to satisfactory assessment of the contribution of the cylinder to the fire resistance of the specified fire/smoke door assemblies. Such assessment is beyond the scope of this European standard (see EN 1634-1)box 4), it must be possible to demonstrate compliance with the Essential Requirements of the Construction Products (Amendments) Regulations.

5. Safety

One grade is identified:

Grade 0:

No requirement

6. Corrosion and Temperature Resistance

Four grades are identified according to EN 1670:

Grade 0:

No corrosion or temperature resistance requirements

Grade A:

BS EN 1670 Grade 3 corrosion resistance (96 hours NSS): no temperature resistance requirements

Grade B:

No corrosion resistance: resistance to -20/+80 C temperature extremes

Grade C:

BS EN 1670 Grade 3 corrision resistance: resistance to -20/+80C temperature extremes

No distinction is made between the inside and the outside of either the cylinder and/or the door. On completion of the test, the cylinder must operate.

7. Key related security

Six grades are identified and the principal requirements are summarised in Table 1`below :


1 2 3 4 5 6

Minimum number of effective differs

100 300 15,000 30,000 30,000 100,000

Minimum number of movable levers, pins, discs etc

2 3 5 5 6 6

Coding on key could disclose combination

Yes Yes No No No No

Torque resistance of plug

2.5Nm 5Nm 15Nm 15Nm 15Nm 15Nm

8. Attack resistance

Three grades are identified and the principle requirements are summarised in table 2 below:

Resistance to drilling
(net drilling time )

0 1 2
- 3/5 mins 5/10 mins

Resistance to chisel attack (number of defined blows)

- 30 40

Resistance to twisting attack (number of defined twists)

- 20 30

Resistance to plug/cylinder extraction (pull load)

- 15kN 15kN

Torque resistance of plug/cylinder

- 20Nm 30Nm

Keyed To differ

Cylinders to differ are all operated by individual keys all different to each other.

Keyed Alike Suites (KA)

In keyed alike arrangements all cylinders are operated by the same key. This gives an arrangement where one key will open a group of locks. Not to be confused with a master keyed suite (see below). Cylinders can also be keyed alike to the euro profile, oval and rim cylinders. This is useful where a combination of cylinder mortice lock cases and cylinder rim nightlatches are being used.

Common Entrance Suite

Common entrance (or flat entrance) suites are designed to enable a tenant to use the same key for his own private doors as well as doors common to other residents within the same buildings. The common entrance feature can be incorporated within any master key suite.

Master key Suites (MK)

In Master key suites, a group of cylinders, each equipped with an individual servant key, is also operated by one special key known as the master key. Keyed alike groups can also be incorporated into any master key suite.

Grand Master Key Suites(GMK)

Grand master key suites are used when it is necessary to have more than one master key group. These groups are referred to as sub suites. In these instances all cylinders irrespective of their sub-suite, are controlled by one key as the grand master key.