Brand: 
UJ42106U UNIVERSAL JOINT 42X106 MERCEDES OSR 1.653X4.173 GREASEABLE HEAVY DUTY
$32.73
26 in stock
Description
UJ42106 universal joint cross, UJ381 series, 1.653″ cap diameter — replacement u-joint for Mostly used on Mercedes App applications.
Full Description
Precision U-Joint: UJ42106 (UJ381 Series, 1.653" Cap)
The UJ42106 universal joint cross is precision-ground to UJ381 series standards -- 1.653" cap diameter, 4.173" overall width -- for use in UJ381 series driveshaft applications. The cross body is heat-treated alloy steel; needle roller bearings are retained in hardened steel caps sealed with elastomer trunnion seals. Lubrication design: greaseable (zerk fitting included).
Specification Data
| Item | Spec |
|---|---|
| Part Number | UJ42106 |
| U-Joint Series | UJ381 |
| Cap Diameter | 1.653" |
| Overall Width | 4.173" |
| Style | OSR |
| Lubrication | greaseable (zerk fitting included) |
| Manufacturer | UDS |
| Application Note | Mostly used on Mercedes App |
Needle Bearing Construction
Each of the four caps houses a set of needle roller bearings running on a hardened trunnion surface. The trunnion hardness depth must exceed the needle contact zone to prevent brinelling under shock loads. These crosses are manufactured to SAE standards for the UJ381 series -- cap bore and trunnion dimensions are interchangeable with all OEM and aftermarket UJ381 yokes.
Application: Uj381 Series Driveshaft
The UJ381 series is the correct specification for UJ381 series driveshaft driveshafts. If you are unsure of your series, compare the cap OD on your old cross to the 1.653" dimension -- or measure your yoke cap bore ID directly. Series must match at both the yoke bore and the cross cap.
Operating Angle
U-joint crosses should operate at angles between 1 and 3 degrees for smooth power transfer and maximum life. Angles above 5 degrees cause cyclic velocity variation (second-order vibration) and accelerate needle bearing fatigue. If your driveshaft angle exceeds 5 degrees, consider a double-cardan (CV) joint arrangement instead.
Mostly used on Mercedes App
New to U-joints? See our universal joint guide for styles, snap-ring types, and measuring tips.
Additional information
| Series | UJ381 |
|---|---|
| Style | OSR |
| Cap dia 1 | 1.653 |
| Width 1 | 4.173 |
| Lube | Yes |
| Brand | UDS |
| Notes | Mostly used on Mercedes App |
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