Piston and Rod D-4

R ≦ 0.3
Piston Ø D Surface Roughness: 0.4~3.2 μ mRmax (0.1~0.8 μ mRa)
R ≦ 0.3
R1 ≦ 0.5
Rod Ø d Surface Roughness: 0.8~1.6 μ mRmax (0.2~0.4 μ mRa)
Items Ø d Ø D h HA
D-4 5 12 5 6
D-4 11.2 17.2 11 12
D-4 12 18 6 7
D-4 14 22 11 12
D-4 15.8 20.8 3 4
D-4 115 130 12 13
D-4 3 4 1/2 0.55
D-4 3 4 3/8 0.413
D-4 3 1/2 4 1/8 5/16 0.344
D-4 3 1/4 4 1/2 1/2 0.55
Items Ø d Ø D h HA
D-4 3 1/4 4 1/2 3/8 0.413
D-4 3 7/8 4 1/4 3/16 0.207
D-4 4 5 3/8 0.413
D-4 4 11/16 5  1/16 3/16 0.207
D-4 4  3/8 5 5/16 0.344
D-4 4 5/8 5 3/16 1/2 0.55
D-4 5  1/4 5  7/8 5/16 0.344
D-4 5  7/16 5 13/16 3/16 0.207
D-4 6  3/16 6  9/16 3/16 0.207
D-4 6  3/8 7 5/16 0.344