Description
Product Information
Related & Alternative Models
Other door knives of the same Sematic B152 range:
- B152AAZX — same set, 445 mm blade length
- B152ABCX — skate support with rollers and unlocking lever
Other Sematic door coupler parts:
- B152ACTX01 / B152ACTX02 — complete door blade, left and right
- B152ACKX01 / B152ACKX02 — reinforced expansion skate, car door locking device
- B099AABX / B099AACX — third unlocking blade
Potensi supplies the Sematic door knife B152ABAX L-185mm, the Sematic door coupler, the Sematic skate arm set and other Sematic and Wittur elevator door parts. The models above are only a part of what we can supply. We stock and source a much wider range of related and alternative models. If your model number is not listed here, please send us the model number or a photo of the original part, and we will confirm availability and the correct match for you.
Why Choose Potensi?
- 99% Market Coverage: We can supply nearly 99% of elevator spare parts on the market.
- Genuine Quality Assurance: We provide genuine and reliable elevator components.
- Expert Identification Support: Send us the model number or product photos, and we can help confirm the correct part.
- Global Shipping: We support fast and reliable international delivery for elevator maintenance projects.
FAQ
Q1: What is the B152ABAX door knife used for?
A: It is a door coupler knife of the Sematic elevator door range. It connects the car door to the landing door and operates the landing door lock, so that both doors move together. It is supplied as a complete set of skate arms with spring and without magnet.
Q2: What other names and part numbers is this door knife known by?
A: The door knife is written B152ABAX and the Wittur article number is BL-B152ABAX. It is also written as the B152ABAX L-185mm door knife. It is also known as the Sematic door coupler, the Sematic skate arm set, the Sematic door skate, the Sematic door blade and the Mitnehmerschwert.
Q3: What is the length of this door knife, and are there other lengths?
A: The blade working length of this door knife is 185 mm. The same door knife set is also made with a blade working length of 445 mm, which is the B152AAZX. The two lengths are not interchangeable, so the length must be confirmed against the door on your lift before ordering.
Q4: Which Sematic doors is this door knife used on?
A: It is supplied for Sematic elevator car doors and landing doors. Sematic is the door range of the Wittur Group, and the Sematic doors include the 2000B and the 2000C landing door ranges. Please confirm the door type and the door operator of your lift before ordering.
Q5: Is the door knife supplied as a set or as a single part?
A: It is supplied as one complete set of skate arms. The set is supplied with the spring, and it is the version without the magnet. Please confirm the version and the length against the part on your door before ordering.
Q6: How can I confirm that this door knife matches my door, and do you supply other Sematic door parts?
A: Please compare the part number B152ABAX, the blade working length, the shape of the skate arms and the mounting with the part on your door. If you are not sure, please send clear photos of the part and of the door operator, and our technical team can help identify the correct part. We also supply other Sematic door knives, door couplers, door skates, landing door locks, door rollers, door belts and other Sematic and Wittur elevator door parts and spare parts.

