Track Rollers
Single Flange/Center Flange*
Caliper Depth Gauge Ultrasonic
Inches (mm) % Worn Inches (mm) Inches (mm)
4.72 (120.0) 0 0.47 (12.0) 1.49 (37.8)
4.70 (119.5) 5 0.48 (12.0) 1.48 (37.6)
4.68 (119.0) 10 0.49 (12.5) 1.47 (37.3)
4.66 (118.5) 15 0.50 (12.5) 1.46 (37.1)
4.64 (118.0) 20 0.51 (13.0) 1.45 (36.8)
4.62 (117.5) 25 0.52 (13.0) 1.44 (36.6)
4.60 (117.0) 30 0.53 (13.5) 1.43 (36.3)
4.58 (116.5) 35 0.54 (13.5) 1.42 (36.1)
4.56 (116.0) 40 0.55 (14.0) 1.41 (35.8)
4.54 (115.5) 45 0.56 (14.0) 1.40 (35.6)
4.52 (115.0) 50 0.57 (14.5) 1.39 (35.3)
4.50 (114.5) 55 0.58 (14.5) 1.38 (35.1)
4.48 (114.0) 60 0.59 (15.0) 1.37 (34.8)
4.46 (113.5) 64 0.60 (15.0) 1.36 (34.5)
4.44 (113.0) 67 0.61 (15.5) 1.35 (34.3)
4.42 (112.5) 70 0.62 (15.5) 1.34 (34.0)
4.40 (112.0) 73 0.63 (16.0) 1.33 (33.8)
4.38 (111.5) 76 0.64 (16.5) 1.32 (33.5)
4.36 (110.5) 79 0.65 (16.5) 1.31 (33.3)
4.34 (110.0) 82 0.66 (17.0) 1.30 (33.0)
4.32 (109.5) 85 0.67 (17.0) 1.29 (32.8)
4.30 (109.0) 88 0.68 (17.5) 1.28 (32.5)
4.28 (108.5) 91 0.69 (17.5) 1.27 (32.3)
4.26 (108.0) 94 0.70 (18.0) 1.26 (32.0)
4.24 (107.5) 97 0.71 (18.0) 1.25 (31.8)
4.22 (107.0) 100 0.72 (18.5) 1.24 (31.5)
4.20 (106.5) 103 0.73 (18.5) 1.23 (31.2)
4.18 (106.0) 106 0.74 (19.0) 1.22 (31.0)
4.16 (105.5) 109 0.75 (19.0) 1.21 (30.7)
4.14 (105.0) 112 0.76 (19.5) 1.20 (30.5)
4.12 (104.5) 115 0.77 (19.5) 1.19 (30.2)
4.10 (104.0) 118 0.78 (20.0) 1.18 (30.0)
4.08 (103.5) 121 0.79 (20.0) 1.17 (29.7)
*NOTE: Do not measure center flange rollers with depth gauge.
Undercarriage Code: 502, 503, 504
507
307, 308 — 6.06" (154 mm), 5.31" (135 mm)
Excavators