E.816.30.15.0 .1-RV

E.18 25.30.40 45 D R Roller bearing
  • E.18 25.30.40 45 D R Roller bearing
  • E.18 25.30.40 45 D R Roller bearing
  • E.18 25.30.40 45 D R Roller bearing
  • E.18 25.30.40 45 D R Roller bearing

E.816.30.15.0 .1-RV-E.18 25.30.40 45 D R Roller bearing

The TGB series is a precision-engineered solution in the field of rotary motion control, combining a compact bearing structure with an integral external gear drive. As a single-row crossed roller slewing ring, this component is designed to manage complex loading conditions within a minimal axial and radial envelope. Its architecture centers on a single raceway that houses cylindrical rollers arranged perpendicularly to one another, alternating their axes at 90 degrees. This crossed arrangement allows the bearing to simultaneously accommodate axial forces, radial forces, and tilting moments, effectively replacing multiple separate bearing components in a given assembly.


Application Areas:

Robotics and automation equipment

Precision rotary tables and indexing systems

Radar and antenna positioning systems

Medical imaging and radiotherapy equipment

High-accuracy solar tracking systems

Machine tools and coordinate measuring equipment



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

E.18 25.30.40 45 D R Roller bearing
Bearing Type : E.816.30.15.0 .1-RV
Brand :LYMC
Drawing No. :Drawing 2
Dimensions
Da(mm) :816
O(mm) :779
u(mm) :679
C(mm) :570
Di(mm) :73
Ha(mm) :65
Hb(mm) :73
H(mm) :90
Fixing Holes
La(mm) :750
na :36
da(mm) :22
Li (mm) :604
ni :36-1
di(mm) :22
Gear Teeth
P(mm) :800
M :8
Z :100
Tooth Force
Fz nor KN :30,7
Fz max KN :61,4
Mass
Weight (KG) :118

Characteristics

✦ Roller arrangement – Cylindrical rollers are positioned with their axes alternating at 90° in a single raceway, enabling each roller to maintain line contact with both raceways simultaneously.

✦ External gear teeth – The outer ring features integrally cut gear teeth with a 14.5° pressure angle, reducing sliding friction during meshing.

✦ Integral seal carriers – Seal grooves are machined with a stepped profile, creating integrated carriers that secure seals without additional components.

✦ Ring material – Rings are manufactured from surface-hardened 50Mn steel, providing a balance of core toughness and surface wear resistance.

✦ Raceway finish – Raceways are ground to a surface finish of 0.3 µm Ra, minimizing rolling friction and heat generation.

✦ Bolt hole design – Mounting holes are countersunk with a 120° included angle, accommodating flat-head screws for flush installation.


Features

✦ Simplifies greasing intervals – The stepped seal profile allows easier access for lubrication ports, reducing maintenance time.

✦ Improves flush-mounting aesthetics – The 120° countersunk bolt holes allow flat-head screws, enabling a clean exterior surface.

✦ Ensures high-speed stability – The 0.3 µm Ra surface finish and optimized roller geometry minimize heat generation at elevated speeds.

✦ Facilitates standard replacement – Dual metric/imperial bolt patterns simplify procurement and maintenance for global applications.

✦ Reduces tooth sliding friction – The 14.5° pressure angle reduces gear meshing resistance, improving overall drive efficiency.

✦ Strengthens ring reliability – The surface-hardened 50Mn material provides high resistance to wear and impact.


Further Reading