Dry Bearing (DAIDO) Polymer bearing
Cylinder Bushings - DAIDYNE DDK05 Polymer bearing & MIT MADE IN TAIWAN

brand:DU DAIDO & Taiwan made
Use for all kind of excavator
KOMATSU– PC
HITACHI– EX ZXKOBELCO-SK
KATO– HDSUMITOMO– SH LS
CATERPILLAR – CAT
MITSUBISHI – MS
KUBODA– U KH KX
IHI
YANMAR – VIO B
TB
The officeal DM
https://www.daidometal.com/wp-content/uploads/2017/10/DDK05.pdf
FEATURES
1. Low coefficient of friction.
2. Greaseless operation.3. Elimination of stick-slip.
4. Compatibility with oil lubrication.
5. Operating temperature range: -200℃ to +280℃.6. Accommodates high-loads, impact loads, intermittent operation and reciprocating motion.
7. Freedom from electrostatic induction (electrical resistance of 1Ω to 10Ω per sq cm of contact area).
8. Resistance to most industrial chemicals and solvents such as petroleum and alcohol.
9. No shaft damage.
10. Extended service life.
11. Light weight, thin wall construction (max. 3 mm) for compact equipment design.
12. Minimal operating noise.