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December 2001 |
325B/330B EXCAVATOR GREASE LUBRICATED LINK ASSEMBLIES
Grease
lubricated track link assemblies are now available in the parts system for
325B, 330B Hydraulic Excavators. With first production of the new 325C
and 330C machines, grease lubricated link assemblies will be standard from the
factory. Two design options are available slip fit master joint or
press fit master joint. These link assemblies are direct replacement for
the former sealed link assemblies used on these models. Known as GLT, the new
grease lubricated link assembly has two Poly-W seals in each track joint to
retain the grease. (See GLT Cross Section.) The seal name is derived from
it?s material, polyurethane, and cross sectional ?W? shape.
The grease lubricated track link assemblies have a larger outer bushing diameter (1.5 mm) for additional wear life. The current sprocket segment can be used with the larger bushing diameter.
These improvements will provide an additional 1200 hours, or more, of undercarriage life for most Hydraulic Excavator applications.
GLT Cross Section
Features and Benefits
Features Benefits
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? Internally greased pin and bushing with seal |
? Improved replacement for sealed link assemblies. Minimum 25% increase in internal wear life (less pin and bushing wear). ? Additional 1200 SMR before signs of wear or evidence of lubricant loss. ? Reduce undercarriage noise. ? Reduces potential for frozen track joints. ? More usable horsepower because of less internal friction. |
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? Larger bushing (1.5 mm diameter) |
? Minimum of 20% increase in external bushing wear life. |
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? Greased pin and larger bushing combined |
? Improves balance in component wear life. ? Extends undercarriage system life by 25-30%. ? Improved sprocket wear because system stays matched longer. |
Part Numbers
The following link assembly (see Attachment I for part number consist) part numbers are available for the specified models:
Model Type Sections Part Number
325B Slip Fit 45 201-9116*
325B Slip Fit 48 201-9117
325B Press Fit 45 213-1933
325B Press Fit 48 213-1932
330B Slip Fit 45 201-9118
330B Slip Fit 49 201-9119
330B Press Fit 45 213-1972
330B Press Fit 49 213-1971
* Available only in Grimbergen Parts Department
Adaptability
GLT link assemblies are directly interchangeable with sealed link assemblies and can be used on earlier built 325 and 330 model Hydraulic Excavators.
Servicing
When performing service on the grease lubricated track link assemblies (turning pin and bushing, replacing components) refer to Undercarriage Reconditioning Bulletin Media No. SEBF8598, dated February 2001.
Custom Track Service (CTS)
When performing CTS on 325B and 330B machines, refer to the 14th Edition of the CTS handbook (Media Number PEKP9400-02). See wear chart on Attachment II for measuring external bushing wear with the increased bushing diameter.
Summary
GLT, grease lubricated, link assemblies offer a significant wear life and cost/hour advantage over comparable sealed link assemblies.
TCRobertson
Undercarriage Marketing Division
Parts and Service Marketing
CV4111 - Tel. (309) 675-7879
Robertson_ThomasCAT.com
325B Link Assembly
Pitch (203.2 mm / 8.00?)
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Name |
Slip Fit Part Numbers |
Press Fit Part Numbers |
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Link Assembly ? 45 Section |
201-9116* |
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Link Assembly ? 48 Section |
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Components of Link Assemblies |
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Track Link RH Master |
- |
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Track Link LH Master |
- |
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Track Link RH |
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Track Link LH |
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Pin |
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Master Pin |
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Bushing |
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Master Bushing |
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Seal |
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Master Seal |
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Cotter |
- |
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Lubricant (Cartridge) |
* Available only in Grimbergen Parts Department
330B Link Assembly
Pitch (215.9 mm / 8.50?)
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Name |
Slip Fit Part Numbers |
Press Fit Part Numbers |
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Link Assembly ? 45 Section |
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Link Assembly ? 49 Section |
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Components of Link Assemblies |
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Track Link RH Master |
- |
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Track Link LH Master |
- |
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Track Link RH |
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Track Link LH |
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Pin |
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Master Pin |
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Bushing |
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Master Bushing |
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Seal |
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Master Seal |
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Cotter |
- |
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Lubricant (Cartridge) |
325B Excavator
Track Bushing with Grease Lubricated Track
External Wear
Allowable Wear
Caliper Lesser Greater Ultrasonic Depth Gauge
|
Inches |
(mm) |
% Worn |
% Worn |
Inches |
(mm) |
Inches |
(mm) |
|
2.60 |
66.0 |
0 |
0 |
0.45 |
11.5 |
0.00 |
0.0 |
|
2.59 |
65.8 |
9 |
7 |
0.44 |
11.2 |
0.01 |
0.3 |
|
2.58 |
65.5 |
18 |
14 |
0.43 |
11.0 |
0.02 |
0.5 |
|
2.57 |
65.3 |
27 |
21 |
0.42 |
10.7 |
0.03 |
0.8 |
|
2.56 |
65.0 |
36 |
28 |
0.41 |
10.5 |
0.04 |
1.0 |
|
2.55 |
64.8 |
45 |
35 |
0.40 |
10.2 |
0.05 |
1.3 |
|
2.54 |
64.5 |
54 |
42 |
0.39 |
10.0 |
0.06 |
1.5 |
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2.53 |
64.3 |
63 |
49 |
0.38 |
9.7 |
0.07 |
1.8 |
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2.52 |
64.0 |
68 |
55 |
0.37 |
9.5 |
0.08 |
2.0 |
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2.51 |
63.8 |
72 |
58 |
0.36 |
9.2 |
0.09 |
2.3 |
|
2.50 |
63.5 |
76 |
61 |
0.35 |
9.0 |
0.10 |
2.5 |
|
2.49 |
63.2 |
80 |
64 |
0.34 |
8.7 |
0.11 |
2.8 |
|
2.48 |
63.0 |
84 |
67 |
0.33 |
8.5 |
0.12 |
3.0 |
|
2.47 |
62.7 |
88 |
70 |
0.32 |
8.2 |
0.13 |
3.3 |
|
2.46 |
62.5 |
92 |
73 |
0.31 |
7.9 |
0.14 |
3.6 |
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2.45 |
62.2 |
96 |
76 |
0.30 |
7.7 |
0.15 |
3.8 |
|
2.44 |
62.0 |
100 |
79 |
0.29 |
7.4 |
0.16 |
4.1 |
|
2.43 |
61.7 |
104 |
82 |
0.28 |
7.2 |
0.17 |
4.3 |
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2.42 |
61.5 |
108 |
85 |
0.27 |
6.9 |
0.18 |
4.6 |
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2.41 |
61.2 |
112 |
88 |
0.26 |
6.7 |
0.19 |
4.8 |
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2.40 |
61.0 |
116 |
91 |
0.25 |
6.4 |
0.20 |
5.1 |
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2.39 |
60.7 |
120 |
94 |
0.24 |
6.2 |
0.21 |
5.3 |
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2.38 |
60.5 |
|
97 |
0.23 |
5.9 |
0.22 |
5.6 |
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2.37 |
60.2 |
|
100 |
0.22 |
5.7 |
0.23 |
5.8 |
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2.36 |
59.9 |
|
103 |
0.21 |
5.4 |
0.24 |
6.1 |
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2.35 |
59.7 |
|
106 |
0.20 |
5.1 |
0.25 |
6.4 |
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2.34 |
59.4 |
|
109 |
0.19 |
4.9 |
0.26 |
6.6 |
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2.33 |
59.2 |
|
112 |
0.18 |
4.6 |
0.27 |
6.9 |
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2.32 |
58.9 |
|
115 |
0.17 |
4.4 |
0.28 |
7.1 |
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2.31 |
58.7 |
|
118 |
0.16 |
4.1 |
0.29 |
7.4 |
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2.30 |
58.4 |
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120 |
0.15 |
3.9 |
0.30 |
7.6 |
330B Excavator
Track Bushing with Grease Lubricated Track
External Wear
Allowable Wear
Caliper Lesser Greater Ultrasonic Depth Gauge
|
Inches |
(mm) |
% Worn |
% Worn |
Inches |
(mm) |
Inches |
(mm) |
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2.76 |
70.0 |
0 |
0 |
0.45 |
11.5 |
0.00 |
0.0 |
|
2.75 |
69.9 |
9 |
7 |
0.44 |
11.2 |
0.01 |
0.3 |
|
2.74 |
69.6 |
18 |
14 |
0.43 |
11.0 |
0.02 |
0.5 |
|
2.73 |
69.3 |
27 |
21 |
0.42 |
10.7 |
0.03 |
0.8 |
|
2.72 |
69.1 |
36 |
28 |
0.41 |
10.5 |
0.04 |
1.0 |
|
2.71 |
68.7 |
45 |
35 |
0.40 |
10.2 |
0.05 |
1.3 |
|
2.70 |
68.6 |
54 |
42 |
0.39 |
10.0 |
0.06 |
1.5 |
|
2.69 |
68.3 |
63 |
49 |
0.38 |
9.7 |
0.07 |
1.8 |
|
2.68 |
68.1 |
68 |
55 |
0.37 |
9.5 |
0.08 |
2.0 |
|
2.67 |
67.8 |
72 |
58 |
0.36 |
9.2 |
0.09 |
2.3 |
|
2.66 |
67.6 |
76 |
61 |
0.35 |
9.0 |
0.10 |
2.5 |
|
2.65 |
67.3 |
80 |
64 |
0.34 |
8.7 |
0.11 |
2.8 |
|
2.64 |
67.1 |
84 |
67 |
0.33 |
8.5 |
0.12 |
3.0 |
|
2.63 |
66.8 |
88 |
70 |
0.32 |
8.2 |
0.13 |
3.3 |
|
2.62 |
66.5 |
92 |
73 |
0.31 |
7.9 |
0.14 |
3.6 |
|
2.61 |
66.3 |
96 |
76 |
0.30 |
7.7 |
0.15 |
3.8 |
|
2.60 |
66.0 |
100 |
79 |
0.29 |
7.4 |
0.16 |
4.1 |
|
2.59 |
65.8 |
104 |
82 |
0.28 |
7.2 |
0.17 |
4.3 |
|
2.58 |
65.5 |
108 |
85 |
0.27 |
6.9 |
0.18 |
4.6 |
|
2.57 |
65.3 |
112 |
88 |
0.26 |
6.7 |
0.19 |
4.8 |
|
2.56 |
65.0 |
116 |
91 |
0.25 |
6.4 |
0.20 |
5.1 |
|
2.55 |
64.8 |
120 |
94 |
0.24 |
6.2 |
0.21 |
5.3 |
|
2.54 |
64.5 |
|
97 |
0.23 |
5.9 |
0.22 |
5.6 |
|
2.53 |
64.3 |
|
100 |
0.22 |
5.7 |
0.23 |
5.8 |
|
2.52 |
64.0 |
|
103 |
0.21 |
5.4 |
0.24 |
6.1 |
|
2.51 |
63.8 |
|
106 |
0.20 |
5.1 |
0.25 |
6.4 |
|
2.50 |
63.5 |
|
109 |
0.19 |
4.9 |
0.26 |
6.6 |
|
2.49 |
63.2 |
|
112 |
0.18 |
4.6 |
0.27 |
6.9 |
|
2.48 |
63.0 |
|
115 |
0.17 |
4.4 |
0.28 |
7.1 |
|
2.47 |
62.7 |
|
118 |
0.16 |
4.1 |
0.29 |
7.4 |
|
2.46 |
62.5 |
|
120 |
0.15 |
3.9 |
0.30 |
7.6 |
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