LKS F1 06 Safety Brake

LKS F1-06 Series –
Unidirectional Progressive Safety Gear

The LKS F1-06 Series Unidirectional Progressive Safety Gear has been developed to ensure the safe and controlled stopping of elevator cars and counterweights up to 3,300 kg P+Q and 2.5 m/s rated speed.

Capacity & Speed P+Q 3300 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 06 Elevator Brake Selection Wizard

Instantly find the exact certified product code tailored to your elevator specifications among 6,048 configurations.

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

LKS F1 06 (P+Q 3,300 kg) verified

LKS.F1.06.7.6.3.9.1.1

Capacity Range 1.400 – 1.600 kg

Declaration Speed 1.6 m/s

Guide Rail 16 mm

Arm/ Coffee Table KK5-A / S0

Rail Lubrication Dry (DRY)

Mounting Tolerance 4,5 mm / 2,5 mm

200kg Graded Factory Setting: For the range 1,400 — 1,600 kg, the spring group and brake shoes are shipped with special calibration at the factory.

Capacity Limit: The LKS F1-06 series is certified for up to 3,300 kg and 2.5 m/s. Please contact us for custom engineering projects.

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LKS F1 06 Official Engineering and Design Report

EN 81-20 & EN 81-50

The LKS F1 06 Series One-Way Progressive Safety Gear has been developed to safely stop the cab and counterweight in elevators. It can be used up to a maximum capacity of P+Q 3,300 kg total load and a rated speed of 2.5 m/s. The hot forged body used in the products is engineered to provide high mechanical strength compared to standard steel constructions. Thanks to the hot forging production method, the load-bearing capacity and impact resistance of the body are increased. The gripping and stopping surfaces of the safety gear have undergone special heat treatment. In order to ensure smooth and low-friction movement of the mechanism, steel shafts are utilized within the system. In addition, the return spring features an adjustable spring stiffness design to accommodate different floor heights and operating conditions. Each product is manufactured to be traceable with a serial number for production and quality tracking. Thanks to the 4.5 mm stopping clearance and 2.5 mm gripping surface, precise and easy installation and field adjustments are achieved. In the final stage, the safety gear is specifically adjusted according to the total mass P+Q and the rated elevator speed. Product settings are determined in 200 kg load increments, tailored to cabin weight and operating conditions.

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

LKS F1 06 features optimized mounting tolerances so that technicians can perform millimeter-accurate brake adjustments in minutes on installation and modernization sites.

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 →	You are currently in review	LKS F1 06A Review →	LKS F1 17 & 18 Heavy Duty Brakes Review →

ENGINEERING & TECHNICAL GUIDE

LKS F1 06 Safety Gear Frequently Asked Questions

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

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

The LKS F1-06 series is designed for applications with a maximum total mass (P+Q) of 3,300 kg and a rated speed of up to 2.5 m/s, certified under EN 81-20 and EN 81-50.

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.

Dedicated Customer Teams and Flexible Services

Our global presence ensures that your production timelines are managed smoothly, cost-effectively, and in compliance.

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