Bushings for Sealed Track
External Wear
Grease Lubricated Track
Only use for 320 FM
Allowable Wear
Caliper Lesser Greater Ultrasonic
Inches (mm) % Worn % Worn Inches (mm)
2.56 (65.0) 0 0 0.51 (13.0)
2.55 (64.8) 5 4 0.50 (12.7)
2.54 (64.5) 10 8 0.49 (12.4)
2.53 (64.3) 15 12 0.48 (12.2)
2.52 (64.0) 20 16 0.47 (11.9)
2.51 (63.8) 25 20 0.46 (11.7)
2.50 (63.5) 30 24 0.45 (11.4)
2.49 (63.2) 35 28 0.44 (11.2)
2.48 (63.0) 40 32 0.43 (10.9)
2.47 (62.7) 45 36 0.42 (10.7)
2.46 (62.5) 50 40 0.41 (10.4)
2.45 (62.2) 55 44 0.40 (10.2)
2.44 (62.0) 60 46 0.39 (9.9)
2.43 (61.7) 65 48 0.38 (9.7)
2.42 (61.5) 70 50 0.37 (9.4)
2.41 (61.2) 72 52 0.36 (9.1)
2.40 (61.0) 74 54 0.35 (8.9)
2.39 (60.7) 76 56 0.34 (8.6)
2.38 (60.5) 78 58 0.33 (8.4)
2.37 (60.2) 80 60 0.32 (8.1)
2.36 (59.9) 82 62 0.31 (7.9)
2.35 (59.7) 84 64 0.30 (7.6)
2.34 (59.4) 86 66 0.29 (7.4)
2.33 (59.2) 88 68 0.28 (7.1)
2.32 (58.9) 90 70 0.27 (6.9)
2.31 (58.7) 92 72 0.26 (6.6)
2.30 (58.4) 94 74 0.25 (6.3)
2.29 (58.2) 96 76 0.24 (6.1)
2.28 (57.9) 98 78 0.23 (5.8)
2.27 (57.7) 100 80 0.22 (5.6)
2.26 (57.4) 102 82 0.21 (5.3)
2.25 (57.2) 104 84 0.20 (5.1)
2.24 (56.9) 106 86 0.19 (4.8)
2.23 (56.6) 108 88 0.18 (4.6)
2.22 (56.4) 110 90 0.17 (4.3)
2.21 (56.1) 112 92 0.16 (4.1)
2.20 (55.9) 114 94 0.15 (3.8)
2.19 (55.6) 116 96 0.14 (3.6)
2.18 (55.4) 118 98 0.13 (3.3)
2.17 (55.1) 120 100 0.12 (3.0)
2.16 (54.9) 102 0.11 (2.8)
2.15 (54.6) 104 0.10 (2.5)
2.14 (54.4) 106 0.09 (2.3)
2.13 (54.1) 108 0.08 (2.0)
2.12 (53.8) 110 0.07 (1.8)
2.11 (53.6) 112 0.06 (1.5)
2.10 (53.3) 114 0.05 (1.3)
2.09 (53.1) 116 0.04 (1.0)
2.08 (52.8) 118 0.03 (0.8)
2.07 (52.6) 120 0.02 (0.5)
Undercarriage Code: 567
520
320 FM — 7.50" (190 mm)
Excavators