Self-locking central flush bolt BMH 1155 with rods

Self-locking central flush bolt BMH 1155 with rods

• central flush bolt with self-locking function for the passive leaf
• for installation in the passive leaf of double-leaf doors
• with control lever built into the faceplate
• suitable for left and right hand doors
• suitable for fire safety doors
• may be combined with the automatic top latch 1141, which ensures automatic locking of the latches in the open position and a self-locking function when the door closes
• standard spindle depth: 25 mm
• available spindle depths: 25, 28, 30, 35, 40, 45, 50, 54, 65, 70 mm
• faceplate: 235 x 20 / 24 mm, stainless steel
• galvanised housing
• box height: 170 mm
• locking rod step in the box: 18 mm

Function 

The passive door leaf can be opened using the control lever integrated into the front plate of the flush bolt mechanism only after the active leaf has been opened. The locking rods are retracted with a lever into the bolt housing and automatically locked in the upper latch. When the lever is released, the locking rods are pushed out of the housing by spring pressure, and the lever is retracted into the face plate. When the door closes, the latch automatically releases the locking rods, thus ensuring their self-locking function.

Set

1. Central flush bolt mechanism with control lever 1155
2. Top switch lock 1141
3. Upper counterplate 1143 (for metal doors) or 1148 (for wooden doors)
4. Lower guide rail 1144
5. Floor bushing 1142
6. Upper locking rod 1101
7. Lower locking rod 1100
8. Strike plate - optional
9. Lock - optional

Select a lock that matches the door construction and required functions for the active leaf. 
Fire safety doors must use a door closer with a closing sequence coordinator.

Technical data for components

Top switch lock 1141

• installed vertically at the top of the door above the flush bolt mechanism
• faceplate: 20 / 24 mm, galvanised
• latch material: steel
• complies with EN 1125 and EN 179 requirements, suitable for use in fire safety doors

Function

• when the door is opened with the handle, the latch automatically locks the locking rods. This function prevents damage to the floor when opening the door.
• when closing the door, the latch touches the box, and the locking rods are unlocked automatically. The rods are retracted into the box or into the floor bushing.

Upper locking rod 1101

• steel tube, galvanised, with a plug
• diameter: 10 mm
• thread: M6
• length L = 1000, 1500, 2000 mm

Lower locking rod 1100

• solid steel bar, galvanised
• diameter: 10 mm
• thread: M6
• length L = 1000, 1500 mm

Top strike plate 1143

• suitable for metal doors
• dimensions: 20 x 52 mm, galvanised
• thickness: 3 mm
• suitable for both right and left hand doors
• complies with EN 179 and EN 1125 requirements, suitable for use in fire safety doors

Top strike plate 1148

• suitable for wooden doors
• dimensions: 20 x 100(60) mm, stainless steel
• thickness: 3 mm
• suitable for both right and left hand doors
• complies with EN 179 and EN 1125 requirements, suitable for use in fire safety doors

Lower guide rail 1143

• dimensions: 20 x 560 mm, galvanised
• plate thickness: 3 mm
• guide outer Ø15 mm, inner Ø10.5 mm
• with plastic insert for noise reduction
• suitable for both right and left hand doors
• complies with EN 179 and EN 1125 requirements, suitable for use in fire safety doors

Floor bushing 1142

• conical shape allows for compensation of installation tolerances
• the wider edge must be positioned in the direction of the passive leaf’s opening
• material - stainless steel
• 4 screw holes
• dimensions: 100 x 56 mm
• complies with EN 179 and EN 1125 requirements

Alternatives to the floor bushing 1142:

• floor bushing with spring cover MA-RZ
• floor bushing for passive leaf fastener KFV 8028
• floor bushing with cover JNF IN.17.400/401
• floor bushing 4800