LKS F1 06A Safety Brake

LKS F1 06A Series —
Unidirectional Progressive Safety Gear

New generation safety device with hot forged steel body and EN 81-20/50 type approval certified, providing safe gradual stop in cab and counterweight systems up to a maximum P+Q 5,500 kg total load and a declared speed of 2.5 m/s.

Capacity & Speed P+Q 5500 kg | 2.5 m/s

Body Technology Hot Forged Steel

Factory Calibration 200 kg Gradual

Mounting Tolerance 4.5 mm / 2.5 mm

Brake Selection Wizard Engineering Report

LKS F1 06A Elevator Brake Selection Wizard

Instantly determine the specific product code for your elevator parameters from 1,020 certified combinations.

EN 81-20/50

1. Total Load (P+Q Mass) Calibrated in steps of 200 kg

2. Elevator Declaring Speed Max. 2.5 m/s

3. Guide Rail

4. Rail Lubrication

5. Mechanical Connection Hardware Power arm & coffee table

Calculated Product Code verified

LKS.F1.06A.17.6.3.10.1.1

Capacity Range 3.200 – 3.400 kg

Declaration Speed 1.6 m/s

Guide Rail 16 mm

Arm/ Coffee Table KK5-B / S0

200kg Graded Factory Setting: The spring group and lugs are calibrated at the factory for the range you choose.

Capacity Limit: LKS F1 06A is for max. 5500 kg and 2.5 m/s. Consult us for special projects.

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LKS F1 06A Official Engineering and Design Report

EN 81-20 & EN 81-50

The LKS F1 06A Series One-Way Step Safety Device has been developed to safely stop the cab and counterweight in elevators. The maximum capacity can be used at values of P+Q 5500 kg total load and 2.5 m/s declared speed. The hot forged body used in the products is designed to provide high mechanical strength compared to standard steel constructions. Thanks to the hot forging production method, the load-bearing and impact resistance of the body is increased. The gripping and stopping surfaces of the safety device have undergone special heat treatment. Steel shafts were used in the system to ensure smooth movement of the mechanism with low friction. In addition, the recoil spring has a design that can adjust the spring stiffness to suit different floor heights and operating conditions. Each product is manufactured in a traceable way with a serial number in order to ensure production and quality tracking. Thanks to a stop gap of 4.5 mm and a grip surface of 2.5 mm, it is possible to make precise and easy installation and field adjustments. At the final stage, the adjustment of the safety device is made specifically according to the total mass P+Q and the nominal speed of the elevator. Product settings are determined in accordance with the weight of the cabin and operating conditions, taking into account the load stages of 200 kg.

Hot Forged Steel Body

Monoblock molecular structure providing high impact and torsional resistance.

200kg Stepped Factory Adjustment

Precise spring calibration at the factory according to rated speed and mass.

4.5mm/ 2.5mm Tolerance

Error-free and precise installation in the field in minutes.

LIFTKEYS ENGINEERING VISION

Liftkeys: high strength, precise adjustment and reliable staggered stopping performance.

Fully Compliant with EN 81-20/EN 81-50 International Elevator Safety Standards

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Precise Mounting Gap and Ease of Field

The LKS F1 06A has optimized mounting tolerances so that technicians can adjust the brakes with millimeter accuracy on construction sites and modernization sites in minutes.

4.5 mm

Stop Gap

Tolerance of free movement between the brake block and the guide rail. Reduces friction and rail wear to zero in normal course.

2.5 mm

Grip Surface

The locking distance of the lugs to the rail at the time of triggering. It distributes the gradual braking force evenly without creating sudden jolts.

Laser Marking & Single Series No

Each body and spring group is coded with individual batch number; production and quality certificate are digitally archived.

LIFTKEYS SAFETY BRAKE SERIES

Gradual Elevator Safety Device Comparison Matrix

Review the certified safety device that best meets your project's P+Q total mass, declared speed, and guide rail parameters in the white paper.

Specification/Model	LKS F1 06B	LKS F1 06	LKS F1 06A	LKS F1 18 (Heavy Load)	LKS F1 17 (Heavy Load)
Max. Capacity (P+Q)	2.600 kg	3.300 kg	5.500 kg	12.500 kg	20.000 kg
Max. Declaration Speed	1,75 m/s	2,50 m/s	2,50 m/s	1,60 m/s	1,60 m/s
Body Structure	Hot Forged Monoblock Steel	Hot Forged Monoblock Steel	Hot Forged Monoblock Steel	Special Heat Treated Spring Steel	Special Heat Treated Spring Steel
Rail Coupling Type	One Way Grader	One Way Grader	One Way Grader	Double Sided Grader	Double Sided Grader
Guide Rail Thickness	9, 10, 16 mm	9, 10, 16 mm	16 mm	16, 19 mm	16, 19, 28.6 mm
Mounting & Stopping Cavity	4,5 mm / 2,5 mm	4,5 mm / 2,5 mm	4,5 mm / 2,5 mm	K + 7 mm	K + 7 mm
Standard & Certification	EN 81-20 & EN 81-50	EN 81-20 & EN 81-50	EN 81-20 & EN 81-50	EN 81-20 & EN 81-50	EN 81-20 & EN 81-50
Model Detail	LKS F1 06B Review →	Review LKS F1 06 →	You are currently in review	LKS F1 17 & 18 Heavy Duty Brakes Review →

ENGINEERING & TECHNICAL GUIDE

LKS F1 06A Safety Assembly Frequently Asked Questions

Curious technical details about elevator step braking systems, standards, mounting tolerances and calibration.

What are the maximum capacity limits of LKS F1 06A safety device?

The LKS F1 06A series is certified according to EN 81-20 and EN 81-50 standards for use in cab and counterweight systems up to a maximum P+Q of 5,500 kg total load and a declared speed of 2.5 m/s.

The hot forging production method homogenizes the internal molecular flow of steel, increasing the impact strength and load-bearing capacity to a much higher level compared to standard welded or cast structures.

In accordance with TS EN 81-20, gradual braking is mandatory in all elevators above 0.63 m/s. The staggered safety device creates controlled friction on the rail, stopping the cabin at an acceleration appropriate to human health; it does not create dangerous shock shocks such as sudden braking.

The stop gap of 4.5 mm and the grip surface tolerance of 2.5 mm give technicians a wide margin of adjustment during assembly, allowing for error-free installation against rail deviations.

The product is specially calibrated in our factory, taking into account the P+Q total mass of your project and the rated speed of 200 kg. In this way, optimal stopping distance and braking force are achieved for each lift.

In oil rails (OIL), the model with special helical oil drain channels and heat-treated clutch shoes is applied to prevent the friction coefficient from falling. On dry rails (DRY), on the other hand, standard high-friction blocks come into play.

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