29388EM Thrust Spherical Roller Bearing, Brass Cage

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29388EM

Bore Diameter:440 mm

Outside Diameter:680 mm

Width:145 mm

Weight:175.2 kg

Min. Order:1 Piece

The 29388EM Spherical Roller Thrust Bearings are suitable for heavy-duty applications involving alignment errors and impacts. Classic applications include large gate hoists in hydraulic engineering, ship stern tubes, mining crushers, continuous casting machine slewing tables, large crane slewing supports, and oil drilling rig rotary tables.

The 29388EM bearing is a Thrust spherical roller bearing with an inner diameter of 440 mm , an outer diameter of 680 mm, a width of 145 mm. It typically uses PN (ABEC-1) grade precision tolerances and bearing steel rings, bearing steel rolling mlement. Its dynamic axial rated load is approximately 4527667 N, its static axial rated load is approximately 18493913 N. together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

440 mm

Outside Diameter:

680 mm

Thickness:

145 mm

Weight:

175.2 KG

Dynamic load Capacity, axial:

4527667 N

Static load Capacity, axial:

18493913 N

Limiting speed (Oil rpm):

838

Specifications:

Structure:

Spherical Roller Thrust Bearing

Number of Rows:

One

Precision Rating:

PN (ABEC-1)

Bearing Material:

bearing steel

Cage Type:

EM = brass cage

Rolling Mlement Material:

bearing steel

Bore Type:

Cylindrical bore

Operating Temperature:

-30 to 110 °C

System of Measurement:

Metric

Series:

293 series (293..EM)

Transaction Information:

Transport Package:

Standard Export Package

Service:

7*24 hour

Shipping Ways:

by Sea or Air

Country of Origin:

china

Stock:

200 Piece

Port:

Tianjin, Shanghai, Shenzhen, Guangzhou or Qingdao

Payment term:

by T/T in advance

Delivery time:

2-3 days for stock, 25-30 days for bulk production

Detailed description

29388EM bearings ( 440 mm x 680 mm x 145 mm) have the advantages of withstand extremely high axial loads and has a self-aligning function to compensate for installation errors or shaft deformation, and are therefore widely used in the Ship propulsion systems, oil drilling rigs, large cranes, hydroelectric generators, and heavy-duty gearboxes.

Part Number	29388EM
Design type	TSR-EM: Spherical inner and outer races; large end roller-riding brass cage
Bearing Type	Thrust spherical roller bearing
Interchangeable	TIMKEN 29388EM
Manufacturer Part Code	29388 EM
Series	293 series (293..EM)
Cage	EM = brass cage
Units	Metric
Tolerance class	PN (ABEC-1)
Dimension Series	93 = Medium
Heat stabilized	200 °C (390 °F)
C_0a Axial Static [lbf]	4157431
C_a Axial Dynamic [lbf]	1017819
Thermal Speed Rating [lbf]	104
n_G Speed ratings (oil) [rpm]	838
d φ Inside [inch]	17.3228
D Φ Outside [inch]	26.7716
T Width [inch]	5.7087
T₁ Cage Position [inch]	3.9803
T₂ Cone Width [inch]	2.0472
T₃ Cup Width [inch]	2.7756
S [inch]	9.6456
r Fillet Radius [inch]	0.1969
d₁ [inch]	24.8622
D₁ [inch]	21.2598
E (Max) Shoulder Diameter Housing [inch]	22.0866
H (Min) Shoulder Diameter Shaft [inch]	23.0314
Weight [lb]	386.2459
K_c Centrifugal force constant	1860

The 29388EM Spherical Roller Thrust Bearings primarily consist of a shaft ring, a housing ring, asymmetrical drum-shaped rollers, and a cage assembly. The housing ring features a spherical raceway design, allowing the rollers to automatically adjust for alignment errors between the shaft and the housing ring.

The advantages of Spherical Roller Thrust Bearings lie in their superior self-aligning capability, effectively compensating for misalignment caused by installation skew or shaft deformation. They also possess extremely high axial load capacity, can withstand certain radial loads, and exhibit excellent impact resistance.

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29388EM Thrust Spherical Roller Bearing, Brass Cage

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