Langer & Laumann Ing.-Büro

Name

Langer & Laumann Ing.-Büro

Legal name

Langer & Laumann Ing.-Büro GmbH

Website

https://lul-ing.de

Company type

Private

Founded year

1998

Operating status

Operating

Headcount range

11–50 employees

Short description

Langer & Laumann Ing.-Büro manufactures TÜV-certified door drives and over 500 retrofit kits for elevator doors and CNC machine safety doors, selling to elevator maintenance companies, modernization specialists, and machine-tool OEMs across Europe and APAC under PE owner Norvestor.

Ownership category

akta.pro rank

Product category

Elevator Door Drive Systems

NAICS

Elevator and Moving Stairway Manufacturing (333921)

SIC

Special Industry Machinery, Nec (3559), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Elevator Modernization & Retrofit (Controllers, Drives, Door Systems) (BPABAIAE)

Keywords

• Elevator door drives
• Machine tool safety doors
• Elevator modernization kits
• Door control systems
• Industrial door automation

Headquarters

HQ city

Nordwalde

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Operations, Supply Chain, Marketing or Sales, Infrastructure

Revenue model

1. Elevator Door Modernization Hardware and Retrofit Kits: One-time hardware sales of door drives, control units, and complete retrofit/modernization kits for elevator doors. Products are purchased outright; no subscription component. Sale of spare parts and accessories. Next-day delivery available. Over 500 different kits in portfolio.
2. Machine Tool Door Drives and Safety Systems: One-time sale of TSG Safety door drives for CNC machines, machining centers, and industrial production machinery. Includes internal/external electronics, DESINA cables, accessories, and webinterface commissioning software. Also covers ATEX explosion-protected variants.
3. After-Sales Service and Support: Technical support, commissioning assistance, and design-in support for mechanical and electrical integration. The company provides competent support and consultation as part of the product offering.

Pricing tiers

Go-to-market motion3 records

Distribution channels6 records

Marketing channels8 records

Core offering

Langer & Laumann Ing.-Büro designs, manufactures, and sells door drive systems and complete modernization kits for two distinct verticals: elevator doors (TSG Lift family) and machine tool protective doors (TSG Safety family). The company offers over 500 retrofit/modernization packages covering virtually all major elevator manufacturers (KONE, Otis, Schindler, Thyssen, Haushahn, TK Elevator, etc.), with encoder-controlled DC motor technology, integrated safety functions (STO/SLS/SLT), TÜV-Nord PL d certification for machine tool doors, and next-day delivery from stock.

Product overview

Langer & Laumann Ing.-Büro is a specialized manufacturer of door drives and modernization solutions for elevators and machine tools, with over 25 years of experience. The company's product portfolio centers on two main product lines: TSG Lift for elevator doors (repair/modernization) and TSG Safety for machine protective doors. The TSG Lift line includes universal door operators (TSG V4 200/400) and specialized variants like QKS for Schindler doors and ATEX for explosive environments, supported by over 500 retrofit packages searchable via the 'Find Your Door' tool. The TSG Safety V4 product line provides Performance Level d certified door drives for CNC machines and machining centers, with features including integrated obstacle detection and automatic reversal. The company also offers complementary services including an ESG calculation tool for sustainability assessment, a mobile Promo Tourer for on-site demonstrations, and multi-language Smart Manual documentation. In 2025, the company expanded into CNC automation with the CNC SMARTDOOR product.

Differentiator

Problem solved

Functional benefit

Brands

• TSG Lift: Door control unit and door drive system for elevator doors, including V4 series, replacement solutions for Otis, Schindler, KONE, Thyssen and other elevator manufacturers.
• TSG Safety
• CNC SMARTDOOR
• Smart Manual
• ESG Calculation Tool / Carbon Impact Calculator

Products and services

• TSG Safety V4 Performance Level d door drive for protective doors and machine protective doors on CNC machines, machining centers, turning and milling machines. TÜV-Nord certified to DIN EN ISO 13849-1 (Category 3) with integrated safety functions including STO (Safe Torque Off), SLS (Safe Limited Speed), and SLT (Safe Limited Torque). Supports door weights up to 1000kg, opening widths up to 4m+, opening speeds up to 0.8 m/s, and includes integrated obstacle detection with automatic reversal that eliminates the need for light curtains, two-hand controls, or safety edges. Available in IP21 internal cabinet-mount and IP54 external direct-mount variants, with ATEX explosion-protected enclosure option.
• TSG Lift Universal encoder-controlled linear door operator for elevator car doors and shaft doors, designed for repair and modernization of existing elevator doors. Compatible with door systems from manufacturers including KONE, Otis, Schindler, ThyssenKrupp, Haushahn, and TK Elevator. Handles door weights up to 400kg and fits in over 95% of modern elevators and over 300 different door systems. Includes plug-compatible replacement cards for Otis DCSS and AT120 door operators, webinterface commissioning, and is available with optional ATEX explosion protection (TSG Lift ATEX), Sinus drive variant (TSG Lift Sinusantrieb), and EN 81-58 fire-rated and EN 81-71 vandal-resistant variants.
• CNC SMARTDOOR Retrofitting solution for automated door opening on protective doors and machine protective doors of CNC machines of all brands. Enables automated working environments without manual door operation, and supports combinations with Cobots and robots for fully automated production cells.
• Umbaukits (Find Your Door) Over 500 different modernization packages and variants for elevator door drives, searchable via the FIND YOUR DOOR interactive product finder by manufacturer, model, door width, opening direction, and original drive type. Includes tailored modernization kits for Schindler QKS door machines (QKS6, QKS8, QKS9, QKS11, QKS14), Otis DCSS/AT120 replacement cards, Haushahn TSS72/TASS80 systems, and Thyssen D6C/M3 TK/F9/F12/VF08/VF11/EDO-15 door types. Available from stock with next-day delivery.

Quantifiable outcome

• Up to 90% less CO₂ emissions from targeted door drive replacement vs. full elevator modernization, based on ESG calculation tool developed with ESCP Business School
• +5 more outcomes

Named customers17 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Ten partnerships are on record, tiered core and minor.

• Complete Plant Maintenance Engineering Ltd. (CPM)coreStrategic or Co-development Partner · 4 June 2026Manchester-based engineering group CPM and its subsidiary Northern Drives & Controls Ltd. (NDC) were acquired by L+L (majority stake). CPM provides repair, replacement, and support services with focus on drive technology and power electronics for elevators, industry, and solar. The acquisition adds technical competencies along the value chain and expands the platform to the UK, Continental Europe, and the USA. CPM co-owners reinvested into the new structure and continue leading the business.
• Northern Drives & Controls Ltd. (NDC)coreStrategic or Co-development Partner · 4 June 2026Subsidiary of CPM, also based in the UK. Specializes in drive technology and power electronics. Part of the L+L group following the majority stake acquisition, expanding technical capabilities in the elevator aftermarket sector.
• ESCP Business SchoolminorStrategic or Co-development PartnerAcademic partnership for the development of a scientifically validated ESG Carbon Impact Calculator for elevator door modernization. The web-based tool combines real project data with technical and economic factors. A joint project team (with Elevoniq GmbH) developed the methodology and calculator.
• AGA Aufzugskomponenten GmbH & Co. KGcoreChannel Partner/ Reseller/ DistributorExclusive channel partner covering South Germany, Austria, and Switzerland for elevator door drives and modernization kits. Contact: Georg Christian Aigner, Am Schulfang 10, 84172 Buch am Erlbach. Provides local sales and support in DACH region.
• Shorts Industries Ltd.coreChannel Partner/ Reseller/ DistributorUK channel partner covering the United Kingdom for elevator door drives and modernization kits. Contact: Richard Armstrong, 15 Kings Gate, Bradford Business Park, BD1 4SJ Bradford, UK.
• NEWLIFT (Singapore)minorChannel Partner/ Reseller/ DistributorASEAN region distributor covering Singapore, Brunei, Laos, Cambodia, Thailand, Vietnam, Malaysia, Indonesia, Myanmar, Philippines, and Timor. Contact: Gerald Huang, 35 Kallang Pudding Road #03-07, Tong Lee Building Block A, Singapore 349314.
• Lifts & MoreminorChannel Partner/ Reseller/ DistributorChannel partner covering Estonia, Latvia, Lithuania, Poland, and Hungary for elevator door products. Contact: Peter Ackermann, Neulengrund 6E, 45149 Essen, Germany.
• Octagon Lifts Pty Ltd.minorChannel Partner/ Reseller/ DistributorAustralian distributor covering the country (except East coast). Contact: Gary Grimes, 6 Brolo Court, O'Connor WA 6163, Australia. Tel: +61 8 6363 5953.
• Elefone Monitoring Pty Ltd. (The Lift Store)minorChannel Partner/ Reseller/ DistributorAustralian distributor for the East coast. Contact: Andrew, Level 5/4 Columbia Ct, Norwest NSW 2153, Tel: +61 401 520899.
• Whitesmith Solutions 2025 LtdminorChannel Partner/ Reseller/ DistributorNew Zealand distributor for elevator door products. Contact: Travis Woods, Mobil: +64 27 9448376.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Fermator: Spanish global leader in elevator door systems manufacturing, now part of KONE Group. Most direct competitor to L+L in elevator door manufacturing, with similar product breadth in landing doors and car doors across all major elevator manufacturers and significant retrofit/aftermarket focus.
• Wittur Group: Global supplier of elevator components including doors, gearboxes, and safety components. Direct competitor in elevator door systems serving the same OEM and aftermarket customer base as L+L with comparable European heritage and specialization in modernization applications.
• Meiller Aufzugtüren GmbH: German specialist manufacturer of elevator landing and car doors. Direct competitor focused on the European elevator door market with similar B2B aftermarket and modernization positioning, and similar Made-in-Germany engineering identity to L+L.
• Sematic S.p.A. Italian elevator doors and components manufacturer serving global OEMs. Direct peer in elevator door systems with comparable product portfolio targeting both elevator manufacturers and the modernization aftermarket segment that L+L also serves.
• Schmersal Group: German global leader in machine safety switching appliances and systems. Direct peer in machine tool safety door components with overlapping certification standards (ISO 13849-1 PL d) and similar industrial safety customer base served by L+L's TSG Safety line.
• Euchner GmbH: German specialist in industrial safety switches, safety relays, and machine door safety systems. Direct competitor for the TSG Safety product line serving CNC machine tool manufacturers and industrial automation customers with comparable TÜV-certified PL d safety offerings.
• SICK AG: German global manufacturer of sensors and sensor-based solutions including safety light curtains and machine safety systems. Direct peer for industrial safety door and obstacle detection applications, with adjacent product overlap to TSG Safety's integrated obstacle detection capabilities.
• Pilz GmbH & Co. KG: German specialist in safe automation including machine safety door systems with PL d certification. Direct peer in machine tool safety applications with comparable TÜV-certified safety architectures and overlapping industrial customer base in CNC machinery and factory automation.

Broad incumbents

• KONE Corporation: Global elevator OEM (one of the 'Big Four') that owns Fermator. While KONE manufactures complete elevators rather than specializing in retrofit kits, it represents both the largest addressable customer for L+L door drive retrofit packages and a potential competitive threat through vertical integration of door system modernization.

Emerging players

• Bernstein AG: German specialist in industrial safety switches, sensors, and machine enclosures. Adjacent competitor for machine tool safety door applications with comparable industrial safety product portfolio and overlapping CNC machine tool OEM customer base served by L+L's TSG Safety product family.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCx7mxQI0djyNy66i5SpK8Yg
• Facebookfacebook.com/langerlaumanningenieure
• LinkedInlinkedin.com/company/lul-ing

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Langer & Laumann Ing.-Büro