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) 7 0.46 (11.7) 0.02 (0.5)
0.98 (25.0) 14 0.44 (11.2) 0.04 (1.0)
1.00 (25.5) 21 0.42 (10.7) 0.06 (1.5)
1.02 (26.0) 28 0.40 (10.2) 0.08 (2.0)
1.04 (26.5) 35 0.38 (9.7) 0.10 (2.5)
1.06 (27.0) 40 0.36 (9.1) 0.12 (3.0)
1.08 (27.5) 45 0.34 (8.6) 0.14 (3.5)
1.10 (28.0) 50 0.32 (8.1) 0.16 (4.0)
1.12 (28.5) 55 0.30 (7.6) 0.18 (4.5)
1.14 (29.0) 60 0.28 (7.1) 0.20 (5.0)
1.16 (29.5) 65 0.26 (6.6) 0.22 (5.5)
1.18 (30.0) 70 0.24 (6.1) 0.24 (6.0)
1.20 (30.5) 75 0.22 (5.6) 0.26 (6.5)
1.22 (31.0) 80 0.20 (5.1) 0.28 (7.0)
1.24 (31.5) 85 0.18 (4.6) 0.30 (7.5)
1.26 (32.0) 90 0.16 (4.1) 0.32 (8.0)
1.28 (32.5) 95 0.14 (3.6) 0.34 (8.5)
1.30 (33.0) 100 0.12 (3.0) 0.36 (9.0)
1.32 (33.5) 105 0.10 (2.5) 0.38 (9.5)
1.34 (34.0) 110 0.08 (2.0) 0.40 (10.0)
1.36 (34.5) 115 0.06 (1.5) 0.42 (10.5)
1.38 (35.0) 120 0.04 (1.0) 0.44 (11.0)
Undercarriage Code: 626
571
Excavators
350 — 9.00" (228.6 mm)
NOTE: Ultrasonic measurement is to determine flange
wear only. Use ultrasonic only on fabricated idlers.
Flange width: 4.75" (120.7 mm)