Idlers
Depth Gauge Ultrasonic Center Flange Wear
Inches (mm) % Worn Inches (mm) Inches (mm)
0.94 (24.0) 0 0.48 (12.2) 0.00 (0.0)
0.96 (24.5) 9 0.46 (11.7) 0.02 (0.5)
0.98 (25.0) 18 0.44 (11.2) 0.04 (1.0)
1.00 (25.5) 27 0.42 (10.7) 0.06 (1.5)
1.02 (26.0) 36 0.40 (10.2) 0.08 (2.0)
1.04 (26.5) 45 0.38 (9.7) 0.10 (2.5)
1.06 (27.0) 54 0.36 (9.1) 0.12 (3.0)
1.08 (27.5) 63 0.34 (8.6) 0.14 (3.5)
1.10 (28.0) 72 0.32 (8.1) 0.16 (4.0)
1.12 (28.5) 80 0.30 (7.6) 0.18 (4.5)
1.14 (29.0) 82 0.28 (7.1) 0.20 (5.0)
1.16 (29.5) 84 0.26 (6.6) 0.22 (5.5)
1.18 (30.0) 86 0.24 (6.1) 0.24 (6.0)
1.20 (30.5) 88 0.22 (5.6) 0.26 (6.5)
1.22 (31.0) 90 0.20 (5.1) 0.28 (7.0)
1.24 (31.5) 92 0.18 (4.6) 0.30 (7.5)
1.26 (32.0) 94 0.16 (4.1) 0.32 (8.0)
1.28 (32.5) 96 0.14 (3.6) 0.34 (8.5)
1.30 (33.0) 98 0.12 (3.0) 0.36 (9.0)
1.32 (33.5) 100 0.10 (2.5) 0.38 (9.5)
1.34 (34.0) 103 0.08 (2.0) 0.40 (10.0)
1.36 (34.5) 104 0.06 (1.5) 0.42 (10.5)
1.38 (35.0) 106 0.04 (1.0) 0.44 (11.0)
1.40 (35.5) 108 0.02 (0.5) 0.46 (11.5)
1.42 (36.0) 110
NOTE: Ultrasonic measurement is to determine
1.44 (36.5) 112
flange wear only.
1.46 (37.0) 114
1.48 (37.5) 116
1.50 (38.0) 118
1.52 (38.5) 120
Flange width: 4.75" (120.7 mm)
Undercarriage Code: 490
707
245 — 9.00" (228.6 mm)
Excavators