Materials

Case Hardened Steel Bushes

Overview

Kormax’s world-class high impact bushings are purpose-built to endure the toughest of challenges in a multitude of industries from mining, farming, automotive, construction, and heavy mechanical engineering. Industries where reliability and performance are absolutely paramount. Our case-hardened steel bushes can be custom manufactured to suit your unique specification. They are ideally suited for lubricated applications and can be manufactured with central, plain, or customised grease grooves for oil or grease.

Common Applications

Attachments
Earth moving equipment
Excavators
Farm machinery
Hydraulic cylinders
Mining equipment

Key Features

Suited for high impact applications
Require grease lubrication
Made with central, spiral or custom grease grooves
High wear and deformation resistance

Material Profile

Profile
Size Range
Metric Size Range (mm)
Imperial Size Range (inch)
NZ (Availability)
AUS (Availability)
Internal Central Grease Groove with External Distribution Groove (Metric)
See Size Range
25 to 60
-
Stocked
Indent
Internal Central Grease Groove with External Distribution Groove (Imperial)
See Size Range
-
1 to 3 ½
Stocked
Indent
Internal Spiral Grease Grooves with External Distribution Groove
See Size Range
65 - 120
-
Stocked
Indent
ID (mm)
OD (mm)
Length (mm)
Code
25
33
32
HSB25X33X32
25
35
25
HSB25X35X25
25
35
32
HSB25X35X32
25
35
38
HSB25X35X38
28
36
40
HSB28X36X40
30
38
40
HSB30X38X40
30
38
50
HSB30X38X50
30
40
30
HSB30X40X30
30
40
35
HSB30X40X35
30
40
40
HSB30X40X40
30
40
45
HSB30X40X45
30
45
30
HSB30X45X30
30
45
40
HSB30X45X40
31.75
38
25
HSB31.75X38X25
31.9
44
50
HSB31.9X44X50
32
38
25
HSB32X38X25
35
45
30
HSB35X45X30
35
45
35
HSB35X45X35
35
45
40
HSB35X45X40
35
45
45
HSB35X45X45
35
45
50
HSB35X45X50
35
45
60
HSB35X45X60
35
50
50
HSB35X50X50
38
48
35
HSB38X48X35
38
48
40
HSB38X48X40
38
48
45
HSB38X48X45
38
48
55
HSB38X48X55
38.1
45
30
HSB38.1X45X30
40
48
40
HSB40X48X40
40
50
25
HSB40X50X25
40
50
30
HSB40X50X30
40
50
35
HSB40X50X35
40
50
40
HSB40X50X40
40
50
45
HSB40X50X45
40
50
50
HSB40X50X50
40
50
63
HSB40X50X63
40
50
80
HSB40X50X80
40
55
60
HSB40X55X60
45
55
25
HSB45X55X25
45
55
30
HSB45X55X30
45
55
35
HSB45X55X35
45
55
40
HSB45X55X40
45
55
45
HSB45X55X45
45
55
50
HSB45X55X50
45
55
55
HSB45X55X55
45
60
40
HSB45X60X40
45
60
50
HSB45X60X50
45
60
60
HSB45X60X60
45
62
40
HSB45X62X40
50
60
30
HSB50X60X30
50
60
32
HSB50X60X32
50
60
35
HSB50X60X35
50
60
40
HSB50X60X40
50
60
45
HSB50X60X45
50
60
50
HSB50X60X50
50
60
55
HSB50X60X55
50
60
60
HSB50X60X60
50
60
70
HSB50X60X70
50
60
80
HSB50X60X80
50
60
90
HSB50X60X90
50
65
50
HSB50X65X50
50
65
60
HSB50X65X60
50
65
70
HSB50X65X70
55
45
50
HSB55X45X50
55
65
45
HSB55X65X45
55
65
50
HSB55X65X50
55
65
55
HSB55X65X55
55
65
60
HSB55X65X60
55
65
70
HSB55X65X70
55
68
45
HSB55X68X45
55
70
60
HSB55X70X60
55
70
70
HSB55X70X70
60
70
50
HSB60X70X50
60
70
60
HSB60X70X60
60
70
70
HSB60X70X70
60
70
80
HSB60X70X80
60
75
50
HSB60X75X50
60
75
60
HSB60X75X60
60
75
65
HSB60X75X65
60
75
70
HSB60X75X70
60
75
75
HSB60X75X75
60
75
80
HSB60X75X80
60
80
50
HSB60X80X50
60
80
65
HSB60X80X65
60
80
80
HSB60X80X80
ID (mm)
OD (mm)
Length (mm)
Code
65
75
50
HSB65X75X50
65
75
65
HSB65X75X65
65
75
75
HSB65X75X75
65
80
50
HSB65X80X50
65
80
60
HSB65X80X60
65
80
65
HSB65X80X65
65
80
80
HSB65X80X80
70
80
50
HSB70X80X50
70
80
80
HSB70X80X80
70
85
50
HSB70X85X50
70
85
60
HSB70X85X60
70
85
70
HSB70X85X70
70
85
80
HSB70X85X80
70
85
85
HSB70X85X85
70
85
90
HSB70X85X90
71
86
70
HSB71X86X70
71
86
80
HSB71X86X80
75
85
60
HSB75X85X60
75
85
80
HSB75X85X80
75
85
100
HSB75X85X100
75
90
60
HSB75X90X60
75
90
70
HSB75X90X70
75
90
80
HSB75X90X80
75
90
90
HSB75X90X90
75
90
100
HSB75X90X100
80
90
60
HSB80X90X60
80
90
70
HSB80X90X70
80
95
50
HSB80X95X50
80
95
60
HSB80X95X60
80
95
65
HSB80X95X65
80
95
70
HSB80X95X70
80
95
80
HSB80X95X80
80
95
90
HSB80X95X90
80
95
100
HSB80X95X100
80
100
75
HSB80X100X75
80
100
100
HSB80X100X100
85
95
50
HSB85X95X50
85
95
80
HSB85X95X80
85
100
75
HSB85X100X75
85
100
85
HSB85X100X85
85
100
100
HSB85X100X100
90
100
100
HSB90X100X100
90
100
110
HSB90X100X110
90
105
50
HSB90X105X50
90
105
62
HSB90X105X62
90
105
70
HSB90X105X70
90
105
80
HSB90X105X80
90
105
88
HSB90X105X88
90
105
96
HSB90X105X96
90
105
100
HSB90X105X100
90
105
110
HSB90X105X110
90
105
128
HSB90X105X128
90
106
90
HSB90X106X90
90
106
105
HSB90X106X105
90
110
80
HSB90X110X80
90
110
100
HSB90X110X100
90
110
120
HSB90X110X120
95
110
75
HSB95X110X75
95
110
100
HSB95X110X100
100
115
85
HSB100X115X85
100
115
100
HSB100X115X100
100
115
120
HSB100X115X120
100
116
100
HSB100X116X100
100
116
115
HSB100X116X115
100
120
90
HSB100X120X90
100
120
100
HSB100X120X100
100
120
130
HSB100X120X130
110
125
100
HSB110X125X100
110
125
125
HSB110X125X125
110
125
150
HSB110X125X150
120
135
95
HSB120X135X95
125
140
130
HSB125X140X130
ID (Inch)
OD (Inch)
Length (Inch)
Code
1
1-3⁄8
1
HSB1 X 1-3⁄8 X 1
1
1-3⁄8
1-¼
HSB1 X 1-3⁄8 X 1-¼
1-¼
1-¾
1-½
HSB1-¼ X 1-¾ X 1-½
1-¼
1-¾
2
HSB1-¼ X 1-¾ X 2
1-½
1-¾
1-¼
HSB1-½ X 1-¾ X 1-¼
1-½
1-¾
2
HSB1-½ X 1-¾ X 2
1-½
2
1-½
HSB1-½ X 2 X 1-½
1-½
2
1-¾
HSB1-½ X 2 X 1-¾
1-½
2
2
HSB1-½ X 2 X 2
1-¾
2-¼
1-½
HSB1-¾ X 2-¼ X 1-½
1-¾
2-¼
2
HSB1-¾ X 2-¼ X 2
2
2-½
1-¾
HSB2 X 2-½ X 1-¾
2
2-½
2
HSB2 X 2-½ X 2
2
2-½
2-½
HSB2 X 2-½ X 2-½
2
2-½
3
HSB2 X 2-½ X 3
2
2-½
3-½
HSB2 X 2-½ X 3-½
2-¼
2-¾
2
HSB2-¼ X 2-¾ X 2
2-¼
2-¾
2-¾
HSB2-¼ X 2-¾ X 2-¾
2-¼
2-¾
3
HSB2-¼ X 2-¾ X 3
2-½
3
2
HSB2-½ X 3 X 2
2-½
3
2-½
HSB2-½ X 3 X 2-1/2
2-½
3
3
HSB2-½ X 3 X 3
2-½
3
3-½
HSB2-½ X 3 X 3-½
2-¾
3-¼
3
HSB2-¾ X 3-¼ X 3
3
3-½
2
HSB3 X 3-½ X 2
3
3-½
3
HSB3 X 3-½ X 3
3
3-½
3-½
HSB3 X 3-½ X 3-½
3-½
4
3-½
HSB3-½ X 4 X 3-½

Operating Performance

Condition Rating Recommendation
Dry 1 Not Recommended
Oil Lubricated 3 Fair
Grease Lubricated 4 Good
Fresh Water 1 Not Recommended
Salt Water 1 Not Recommended

Bearing Properties

Physical Properties Condition Metric Values Imperial Values
Maximum Contact Pressure Sliding 50 N/mm2 7300 psi
Operating temperature Min -50 °C -58 °F
Operating temperature Max 150 °C 302 °F
Maximum sliding speed Lubricated 0.1 m/s 20 fpm
Maximum PV factor Lubricated 1.5 N/mm2 x m/s 43000 psi x fpm
Coefficient of friction Lubricated 0.2

Tolerances

Internal Central Grease Groove; External Distribution Groove
Metric Size Range, ID, mm ID Tolerance: OD Tolerance: Length
25 to 60 +0.1mm to + 0.15mm +0.0 mm to +0.05 mm -0.5 mm to +0.0 mm
Imperial Size Range, ID, inch ID Tolerance: OD Tolerance: Length
1″ to 2-1/4″ +0.1 mm to +0.15 mm +0.0 mm to +0.05 mm -0.5 mm to +0.0 mm
2-1/2″ to 3-1/2″ +0.15 mm to +0.2 mm +0.12 mm to +0.17 mm -0.5 mm to +0.0 mm
Internal Spiral Grease Grooves; External Distribution Grooves
Metric Size Range, ID, mm ID Tolerance: OD Tolerance: Length
65 to 100 +0.15 mm to +0.2 mm +0.12 mm to +0.17 mm -0.5 mm to +0.0 mm
110 to 120 +0.35 mm to +0.40 mm +0.25 mm to +0.30 mm -0.5 mm to +0.0 mm

Mating Material Recommendations

Mating Material Recommendations
Physical Properties Unit Value
Surface Roughness µm < 0.8
Surface Hardness HB > 600

Resources

Case Hardened Steel Bushes Data Sheet

PDF (47 KB)

Wall Chart

Download Our Case Hardened Steel Bushes Wall Chart Here

PDF (432 KB)

Download Our Bushings Book Here

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Quality Management

Quality materials, delivered to standard.

Kormax is ISO certified for ISO 9001, ISO 14001, and ISO 45001.
All Kormax products come with batch certifications.