EBL.30.1055.200-1STPN

21 24 27 Series bearing
  • 21 24 27 Series bearing
  • 21 24 27 Series bearing

EBL.30.1055.200-1STPN-21 24 27 Series bearing

The external gear with inner flange slewing bearing is a versatile rotational component designed for applications where compact mounting, straightforward installation, and efficient drive integration are essential. This configuration combines an external gear on the outer ring with an integral inner flange on the inner ring, offering a practical solution for equipment requiring a stable, low-profile mounting interface alongside direct pinion drive capability.


Application Areas:

Compact crane turntables and lifting equipment

Aerial work platforms and access equipment

Solar tracking systems with space constraints

Light to medium-duty industrial turntables

Packaging and handling machinery



High load-carrying capacity
Resistance to high and low temperatures
Noise-free operation
Strictly controlled tolerances and appropriate internal clearance
Long service life and low maintenance requirements
Prevention of unexpected downtime (avoiding bearing fracture, seizure, and safety incidents caused by such failures, with anti-tilting capability)

Dimension and Parameters

21 24 27 Series bearing
Type :EBL.30.1055.200-1STPN
Brand :LYMC
Weight :Drawing 4
Dimensions
De :1198
Di :1053.5
Be :1056.5
Fastening
Fe :993
Ne :905
Fi :1116
Ni :30
Gears
m :945
z :30
D :10
Teeth Resistance kN :118

Characteristics

✦ Bearing type – Single-row ball slewing ring with external teeth and inner ring flange.

✦ Gear specification – External gear with 20° pressure angle, available in module sizes from 3 to 10.

✦ Flange configuration – Inner ring flange includes both threaded and through-hole options for versatile attachment.

✦ Raceway design – Single-arc raceway with optimized ball contact angle for balanced load distribution.

✦ Heat treatment – Raceways are induction hardened to 55–58 HRC with a minimum case depth of 2.5 mm.

✦ Sealing arrangement – Labyrinth seals combined with rubber lip seals for enhanced protection.


Features

✦ Reduces assembly height – The flange design allows the bearing to be mounted directly to the machine frame, lowering the overall profile.

✦ Simplifies gearbox integration – External teeth mesh directly with standard pinions, eliminating intermediate gears.

✦ Enhances corrosion resistance – Optional zinc phosphate coating provides protection in humid or coastal environments.

✦ Supports heavy intermittent loads – The single-arc raceway handles peak loads during start-stop cycles.

✦ Improves seal longevity – The labyrinth-rubber seal combination reduces wear from abrasive particles.

✦ Allows flexible bolt selection – Threaded and through-hole options accommodate both metric and inch fasteners.


Further Reading