T1, T2, T3 Cage Testing and Analysis

Characteristics of three types of cages as shown in Table 1. below.

Cage Designation	T1	T2	T3
Guidance	Outer ring guided	Rolling element guided	Mixed guided / Outer ring guided
Material	Phenolic	Nylon	PEEK
Noise at low RPM	○	○○○	○○○
Restriction to rolling element (lower restriction the better)	○○○	○	○○
Max. DmN	> 1,600,000	≈ 900,000	≈ 1,600,000
○○○：Great ○○：Acceptable ○：Weak

Table 1.

Base on the characteristics, TPI has done cage deformation analysis under 15000 rpm as shown in Figure 1, 2, 3.

Figure 1. T1 Cage

Figure 2. T2 Cage

Figure 3. T3 Cage

Conclusion of cage deformation analysis as below,

As the rotating speed increased, T3 cage has become outer ring guided from mixed guided.

Finally, cage DmN test has been carried out under DmN value 1.6M (18k rpm) with HS014CE1 bearing and test result as shown in Figure 4.

Conclusion of cage investigation after bearing run-in test as below,

Scratch between rolling element and ball pocket was found in sample with T2 cage.

Engineering