DDR-4EE

DDR-4EE Extended Inner Ring Standard
Price $ 3.54
Number
Part Number DDR-4EE
Brand: LILY Brand: LILY
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Equivalent: NMB
System of Measurement Inch
Bearing Type Ball
For Load Direction Radial
Construction Single Row
Inner Ring Type Extended
Seal Type Open
Bore Dia 0.25"
Bore Dia Tolerance -0.0003" to 0"
Outer Dia 0.625"
Outer Dia Tolerance -0.0003" to 0"
Width 0.196"
Width Tolerance -0.005" to 0"
Inner Ring Outer Dia 0.364"
Inner Ring Width 0.2273"
Ring Material 440C Stainless Steel
Ball Material 440C Stainless Steel
Cage Material 300 Series Stainless Steel
Dynamic Radial Load 255 lbf
Static Radial Load 101 lbf
Max Speed (X1000 rpm) 34.2
Lubrication Required
Temperature Range -86 to 230 °F
Shaft Mount Type Press Fit
ABEC Rating ABEC1 (Available in ABEC3/5/7)
Radial Clearance Trade No MC3 (Available in MC1/2/4/5/6)
Radial Clearance 0.00008" to 0.0005"
ROHS Compliant
REACH Compliant
Ball Dia 0.0937"
Ball Qty 8
Weight 4.54 g
DDR-4EE Extended Inner Ring Standard cad drawing

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INTERCHANGE
The LILY bearing part series DDR-4EE is a potential replacement for these common bearing part numbers.
NMB
LILY
DYNAROLL
NHBB
MPB (Timken)
EZO
DDR-4EE
SRW4
SRW4
SSR-4EE
SR4CE
SRW4

DDR-4EE NMB Ball Bearings with Extended Inner Ring have deep groove geometry for high speeds and supporting both radial and axial loads. These DDR-4EE NMB Ball Bearings with Extended Inner Ring are for use in applications that involve combined radial and axial loads and a need for high running accuracy at high rotational speeds. For instance, DDR-4EE is often used in motors, ATMs as well as Card Readers. In Food & Beverage Industry, DDR-4EE is also popular. More applications about DDR-4EE are as follows.

Typical applications include:

Motors,Flow Meters,Medical Instruments,Vacuum Pumps,Robotics Industry,Crossbow,Food & Beverage Industry,Automation & Industry,Anemometer,ATMs & Card Readers,Galvanometers,Gas Meters,Industrial Encoders,Industrial Meters,Optical Encoders,Plastic Card Printers,Surveillance Systems,Fuel controls,Gyros, synchros and servos,Cryogenic coolers,Pulmonary assist devices,Clocks,Instrumentation,Drones and model,Fishing reel

General Selection Factors

Several factors must be considered for choosing NMB ball bearings. These factors include the ring material, design, shields and seals, cage, Annual Bearing Engineering Committee (ABEC) grade, radial play, and lubricant. NMB bearings are available in open, sealed and shielded configurations. Seals and shields are used in NMB bearings (specifically ball bearings) to retain lubricants and prevent particulate contamination from reaching critical surfaces. Seals are used where minimal light contact is offered. Seals for NMB bearings provide deterrence to particulate contamination, but increase torque and limit operating speeds. Shields are used in most applications.