Track Rollers
Double Flange
Caliper Depth Gauge Ultrasonic
Inches (mm) % Worn Inches (mm) Inches (mm)
9.49 (241.0) 0 0.67 (17.0) 2.37 (60.2)
9.39 (238.5) 6 0.72 (18.5) 2.32 (58.9)
9.29 (236.0) 12 0.77 (19.5) 2.27 (57.7)
9.19 (233.5) 18 0.82 (21.0) 2.22 (56.4)
9.09 (231.0) 24 0.87 (22.0) 2.17 (55.1)
8.99 (228.5) 30 0.92 (23.5) 2.12 (53.8)
8.89 (226.0) 36 0.97 (24.5) 2.07 (52.6)
8.79 (223.5) 42 1.02 (26.0) 2.02 (51.3)
8.69 (220.5) 48 1.07 (27.0) 1.97 (50.0)
8.59 (218.0) 54 1.12 (28.5) 1.92 (48.8)
8.49 (215.5) 60 1.17 (29.5) 1.87 (47.5)
8.39 (213.0) 66 1.22 (31.0) 1.82 (46.2)
8.29 (210.5) 72 1.27 (32.5) 1.77 (45.0)
8.19 (208.0) 78 1.32 (33.5) 1.72 (43.7)
8.09 (205.5) 82 1.37 (35.0) 1.67 (42.4)
7.99 (203.0) 85 1.42 (36.0) 1.62 (41.1)
7.89 (200.5) 88 1.47 (37.5) 1.57 (39.9)
7.79 (198.0) 91 1.52 (38.5) 1.52 (38.6)
7.69 (195.5) 94 1.57 (40.0) 1.47 (37.3)
7.59 (193.0) 97 1.62 (41.0) 1.42 (36.1)
7.49 (190.0) 100 1.67 (42.5) 1.37 (34.8)
7.39 (187.5) 103 1.72 (43.5) 1.32 (33.5)
7.29 (185.0) 106 1.77 (45.0) 1.27 (32.3)
7.19 (182.5) 109 1.82 (46.0) 1.22 (31.0)
7.09 (180.0) 112 1.87 (47.5) 1.17 (29.7)
6.99 (177.5) 115 1.92 (49.0) 1.12 (28.4)
6.89 (175.0) 118 1.97 (50.0) 1.07 (27.2)
6.79 (172.5) 121 2.02 (51.5) 1.02 (25.9)
6.69 (170.0) 124 2.07 (52.5) 0.97 (24.6)
6.59 (167.5) 127 2.12 (54.0) 0.92 (23.4)
6.49 (165.0) 130 2.17 (55.0) 0.87 (22.1)
Flange diameter is 10.83" (275 mm)
Undercarriage Code: 178, 1785, 179, 180, 182, 183, 184
199
D8L, D8N, D8R, 578, 583R — 8.50" (215.9 mm)
Elevated Sprocket Machines