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16278001 Slewing Ring Bearing Turntable Bearing for Large Excavators

Part Number 16278001
Maximum Allowable Gear Tooth Load (Fz) 40,770lbs | 182.009KN
Moment Load Rating (Crm) 3,896,200ft-lbs | 17393.75KN
Bearing Types Slewing Ring Bearing

16278001 Slewing Ring Bearing Turntable Bearing for Large Excavators

The DT Series consists of the eight-point ball bearing Kaydon originally developed to provide maximum load capacity for given envelope and bolt circle diameters. It provides up to 80% increase in capacity over that of a single-row four-point design of the same diameter and bolt circles. Yet the DT Series has a smaller profile than a three-row roller design. 

Design Features 

The internal configuration consists of two deep groove gothic arch raceways, each with a maximum ball complement, located in both the inner and outer rings. This results in a total of eight surfaces where the balls may contact at any time, providing exceptional moment, thrust, and radial load capacities. Through precise manufacturing, the raceways are closely matched to provide a high degree of load sharing. Integral seals are provided to assist in the exclusion of contaminants. 

Availability 

DT Series bearings are made to order with a fully customizable hole pattern for bearing retention, and an internal or external gear or other drive mechanism. 

Applications 

DT Series bearings have been used successfully in heavy duty applications including: 

❚ Large excavators ❚ Large cranes ❚ Mining equipment ❚ Wind turbines ❚ Telescopes

DT NO GEAR.pngdt internal gear.pngdt external gear.png


Specification

Specifications

Part Number

16278001

Maximum Allowable Gear Tooth Load (Fz)

40,770lbs | 182.009KN

Moment Load Rating (Crm)

3,896,200ft-lbs | 17393.75KN

Bearing Types

Slewing Ring Bearing

Outline Dimensions and Weight

Outside Diameter of Outer Ring (Do)

94.173" | 2391.99mm

Inside Diameter of Inner Ring (di)

77.008" | 1956mm

Height of overall bearing assembly(H)

7.126" | 181mm

Height of outer ring(Ho)

6.732" | 170.99mm

Height of inner ring(Hi)

6.732" | 170.99mm

External diameter on outer ring(Dr)

-

Internal diameter on inner ring(dr)

79.291" | 2013.99mm

Approximate Weight (lbs)

3410lbs | 1546.742KG

Mounting Holes

Bolt Circle in Outer Ring (Lo)

90.787" | 2305.99mm

Number Holes in Outer Ring (no)

60

Size of hole in outer ring(Bo)

1.535"

Bolt circle in inner ring(Li)

82.677" | 2100mm

Number Holes in Inner Ring (ni)

60

Size of hole in inner ring(Bi)

1.535"

Gear Data

Pressure Angle of Gear Teeth (α)

20 º

Tooth form

FD

Pitch Diameter of Gear (D2)

77.48" | 1967.99mm

Gear module(M)

12

Number of Gear Teeth(z2)

164

("+" / "-" sign increases tooth thickness at D2(X2)

-0.5

Face Width of Gear Teeth(b2)

3.937

gear

Internal