Track Rollers
8E Rim
Caliper Depth Gauge Ultrasonic
Inches (mm) % Worn Inches (mm) Inches (mm)
6.37 (162.0) 0 0.75 (19.0) 1.67 (42.4)
6.33 (161.0) 6 0.77 (19.5) 1.65 (41.9)
6.29 (160.0) 12 0.79 (20.0) 1.63 (41.4)
6.25 (159.0) 18 0.81 (20.5) 1.61 (40.9)
6.21 (157.5) 24 0.83 (21.0) 1.59 (40.4)
6.17 (156.5) 30 0.85 (21.5) 1.57 (39.9)
6.13 (155.5) 36 0.87 (22.0) 1.55 (39.4)
6.09 (154.5) 42 0.89 (22.5) 1.53 (38.9)
6.05 (153.5) 48 0.91 (23.0) 1.51 (38.4)
6.01 (152.5) 54 0.93 (23.5) 1.49 (37.8)
5.97 (151.5) 60 0.95 (24.0) 1.47 (37.3)
5.93 (150.5) 66 0.97 (24.5) 1.45 (36.8)
5.89 (149.5) 72 0.99 (25.0) 1.43 (36.3)
5.85 (148.5) 78 1.01 (25.5) 1.41 (35.8)
5.81 (147.5) 84 1.03 (26.0) 1.39 (35.3)
5.77 (146.5) 88 1.05 (26.5) 1.37 (34.8)
5.73 (145.5) 91 1.07 (27.0) 1.35 (34.3)
5.69 (144.5) 94 1.09 (27.5) 1.33 (33.8)
5.65 (143.5) 97 1.11 (28.0) 1.31 (33.3)
5.61 (142.5) 100 1.13 (28.5) 1.29 (32.8)
5.57 (141.5) 103 1.15 (29.0) 1.27 (32.3)
5.53 (140.5) 106 1.17 (29.5) 1.25 (31.8)
5.49 (139.5) 109 1.19 (30.0) 1.23 (31.2)
5.45 (138.5) 112 1.21 (30.5) 1.21 (30.7)
5.41 (137.5) 115 1.23 (31.0) 1.19 (30.2)
5.37 (136.5) 118 1.25 (32.0) 1.17 (29.7)
5.33 (135.5) 121 1.27 (32.5) 1.15 (29.2)
Flange diameter is 7.87" (200 mm)
Undercarriage Code: 443, 455
642
225, 219, 215 S.A., FB221, FB217, DL221 — 7.50" (190 mm) & 6.91" (175.5 mm)
Excavators