ZR1.16.1204.400-1SPPN

ZR1 Toothed roller bearing
  • ZR1 Toothed roller bearing
  • ZR1 Toothed roller bearing
  • ZR1 Toothed roller bearing
  • ZR1 Toothed roller bearing
  • ZR1 Toothed roller bearing
  • ZR1 Toothed roller bearing

ZR1.16.1204.400-1SPPN-ZR1 Toothed roller bearing

The ZR1 series is a proven range of single-row crossed roller slewing bearings with integrated internal gearing, designed for machinery that requires high rotational accuracy, substantial load capacity, and a compact structural footprint. These bearings combine a precision internal gear tooth profile within the inner ring, enabling seamless direct drive integration without the need for additional transmission components.



Application Fields:

Rotary indexing tables and turntables for machining and assembly

Material handling and crane slewing mechanisms

Aerial work platforms and access equipment

Medical diagnostic devices and precision inspection machinery

Radar and communication antenna positioning systems



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

ZR1 Toothed roller bearing
Type :ZR1.16.1204.400-1SPPN
Brand :LYMC
Drawing No. :Drawing 3
Dimensions
De[mm] :1289
de[mm] :1206
dce/Dce[mm] :
di[mm] :1202
Dci[mm] :
Di[mm] :1072
He[mm] :
Hi[mm] :
Ht[mm] :
Hd[mm] :
Holes Information
Fe[mm] :1257
Ne :45
He :16
Fi[mm] :1151
Ni :45
hi[mm] :16
Gear Data
m :10
z :108
Dp :1080
fz norm[kN] :48,33
fz max[kN] :96,67
Weight
KGS :148

Characteristics

✦ Single-row crossed roller configuration – Cylindrical rollers are alternately oriented at 90° in a single raceway, achieving line contact with both axial and radial raceways.

✦ Internal gear on inner ring – Gear teeth are integrally hobbed on the inner ring bore, featuring a 20° pressure angle spur profile with induction-hardened flanks.

✦ Monobloc ring construction – Both rings are manufactured as single-piece forgings, ensuring seamless material integrity without welded or bolted joints.

✦ Precision-ground raceways – Raceways are ground to P5 tolerance class with a surface finish of 0.4 µm Ra.

✦ Dual-zone hardening – Raceways hardened to 58–62 HRC with a case depth of 2.0–3.0 mm, gear teeth hardened to 50–55 HRC.


Features

✦ Minimizes heat generation – The line-contact roller geometry distributes loads over a broad surface, reducing friction and controlling temperature rise.

✦ Ensures backlash-free operation – The crossed roller arrangement eliminates internal clearance, providing consistent positioning accuracy.

✦ Simplifies gear integration – Internal gear design allows direct pinion engagement, simplifying the overall drive system.

✦ Reduces maintenance frequency – The precision-ground raceways and high-quality steel extend service intervals.

✦ Withstands harsh environments – The integrated seal grooves accommodate effective sealing, protecting against contaminants.

✦ Facilitates customization – The 250–3,000 mm size range allows for tailored solutions to meet specific application needs.


Further Reading