ISEO 3133 Multiple-bolt mortise lock | Backset 70 mm (0000031330070)

Lock and fitting dimensions

Check the backset, centre distance, faceplate and mounting points against the specific model drawing.

Specifications

Construction

Multiple-bolt mortise lock

Backset

70 mm

Bolt throws

4

Key type

Double-bit key 40.00.75

Bolt shape

Parallel cylindrical bolts (catalogue illustration)

Functions and interfaces of this model

3133 uses double-bit key 40.00.75, with 4-throw bolt action. For replacement, check the key interface, bolt shape and faceplate fixing holes separately; different lock bodies with the same backset are not the same product.

Using backset for compatibility checks

The catalogue records this model's backset as 70 mm. Backset is measured from the specified faceplate or door-edge reference to the operating centre. It describes a different direction from centre distance, lock-body width and door thickness; retain the original drawing's reference when measuring.

The selection checklist should also retain: backset 70 mm; Bolt throws 4; Key type Double-bit key 40.00.75; Bolt shape Parallel cylindrical bolts (catalogue illustration). Even for models with the same backset, compare handing, latch/bolt configuration and drive interfaces.

Checks before replacement and installation

Give the supplier the full model number 0000031330070, photographs of the original lock body, door handing and measured dimensions. The measurement reference in the diagram only explains what the dimension means; it cannot be used directly as a drilling template.

For electric configurations, also check power-supply and control requirements; for mechanical versions, check the strike plate, cylinder connection and range of movement.

Limitations

• This page follows the specific model row in Catalogue .42; it does not replace site installation drawings or the manufacturer's confirmation of current supply.
• The measurement diagram explains only this page's dimensional reference; it does not show the product appearance, drilling positions or complete installation dimensions.

Sources

Manufacturer documents are provided in their original language.

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