EN 81-20/50

Hot Forged Steel Body

4.5 mm Stop Gap

Adjustable Back Spring

200 kg Gradual Adjustment

LKS F1 06B Stepped Safety Assembly

LKS F1 06B Series —
One-Way Step Safety Assembly

Step safety device with a maximum capacity P+Q 2600 kg total load and a high mechanical strength hot forged steel body with a declared speed of up to 1.75 m/s, developed for the purpose of safely stopping the cab and counterweight in elevators.

Maximum Capacity P+Q 2.600 kg

Declaration Speed Up to 1.75 m/s

Body Structure Hot Forged Steel

Stop/Grip 4,5 mm / 2,5 mm

06B Brake Selection Wizard Engineering Report

LKS F1 06B Series — One-Way Step Safety Assembly

EN 81-20 & EN 81-50

The LKS F1 06B 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 2600 kg total load and 1.75 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.

Custom Heat Treatment Stop Surfaces & Steel Shafts

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.

Adjustable Recoil Spring Design

In addition, the recoil spring has a design that can adjust the spring stiffness to suit different floor heights and operating conditions.

4.5 mm Stop Gap & 2.5 mm Grip

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.

200 kg Gradual Adjustment & 100% Traceability

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. Each product is manufactured in a traceable way with a serial number in order to ensure production and quality tracking.

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

LKS F1 06B Elevator Brake Selection Wizard

Instantly determine the specific product code for your elevator parameters from 1,728 certified hot forged steel combinations.

EN 81-20/50

1. Total Load (P+Q Mass) 800 kg - 2,600 kg (200 kg Graded)

2. Elevator Declaring Speed Max 1.75 m/s

3. Guide Rail (K)

4. Force Arm

5. Coffee Table Type Coffee table options compatible with different carcass types

Calculated Product Code LKS F1 06B (P+Q 2.600 kg)

LKS.F1.06B.7.5.3.3.1

Capacity Range 1.400 – 1.600 kg

Declaration Speed 1.0 m/s

Guide Rail 16 mm

Force Handle/Coffee Table KK3 / S0

LKS F1 06B Calibration: 200kg staggered hot forged body and stop lugs are factory calibrated for your chosen range.

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LKS F1 06B Stop and Grip Surface Tolerance Drawing

Enlarge Technical Drawing

4.5 mm Stop and 2.5 mm Grip Surface Tolerance

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.

4,5 mm

Precise Stop Cavity

Resetting friction during normal cruising ensures that the brake blocks grip the rail within milliseconds at the moment of emergency triggering.

2,5 mm

Special Heat Treated Grip Surface

The special hardened lug surface of 2.5 mm in contact with the rail surface increases the wear resistance to the maximum level, ensuring a long service life.

Laser Marking & Single Series No

Each product is manufactured in a traceable way with a serial number in order to ensure production and quality tracking.

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 06A	LKS F1 18 (Heavy Load)	LKS F1 17 (Heavy Load)
Max. Capacity (P+Q)	2.600 kg	5.500 kg	12.500 kg	20.000 kg
Max. Declaration Speed	1,75 m/s	2,50 m/s	1,60 m/s	1,60 m/s
Body Structure	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	Double Sided Grader	Double Sided Grader
Guide Rail Thickness	9, 10, 16 mm	9, 10, 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	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
Model Detail	You are currently in review	LKS F1 06A Review →	LKS F1 17 & 18 Heavy Duty Brakes Review →

ENGINEERING & TECHNICAL GUIDE

LKS F1 06B Safety Assembly Frequently Asked Questions

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

Which elevator types and capacities is the LKS F1 06B safety device suitable for?

The LKS F1 06B series is optimized according to EN 81-20 and EN 81-50 standards for residential, business center and commercial passenger elevators with a maximum P+Q of 2,600 kg total load and a declared speed of up to 1.75 m/s.

The LKS F1 06B has been developed for standard passenger lifts with a P+Q load of 2,600 kg and compact dimensions of up to 1.75 m/s. The LKS F1 06A targets high-speed and high-traffic elevators with a mass of 5,500 kg P+Q and a speed of 2.5 m/s. Both models have a monoblock hot forged steel body.

The hardness of the recoil spring can be adjusted according to the building floor height and operating conditions. The high-strength steel shafts used in the system ensure smooth movement of the mechanism with low friction, ensuring stable locking of the shoes to the rail.

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. It offers a wide range of adjustment against minor deviations in the guide rail surface.

Each product is manufactured in a traceable way with a serial number in order to ensure production and quality tracking. Test parameters, steel batch and spring calibration data are recorded in our quality archive and can be verified in periodic inspections.