Ships and Marine Technology — Ship's Mooring and Towing Fittings — Steel Rollers
1 Scope
This standard specifies the design, size and technical requirements for steel rollers.
This standard is applicable to the design, manufacture and acceptance of steel rollers.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 13767 Ships and Marine Technology — Ship's Mooring and Towing Fittings — Shipside Roller Fairleads
ISO 13776 Ships and Marine Technology — Ship's Mooring and Towing Fittings — Pedestal Fairleads
IMO Circular MSC/
Circ.1175 Guidance on Shipboard Towing and Mooring Equipment
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
safe working load (SWL)
maximum load, in kN, on the rope that should normally be applied in service conditions
4 Classification
4.1 Types
Depending on the construction, steel rollers shall be classified as the following three types:
Type A: made of steel casting without upper dust cover;
Type B: made of steel casting with upper dust cover;
Type C: made of steel plate with dust cover.
4.2 Nominal sizes
The nominal sizes of steel rollers are: 150, 200, 250, 300, 350, 400, 450 and 500.
The nominal sizes, Dn, are denoted by reference to the outside diameter of the roller in millimeters from a basic series of preferred numbers.
5 Dimensions
Steel rollers have dimensions and particulars in accordance with Tables 1, 2, 3 and 4, and Figures 1, 2, 3, 4, 5, 6, 7 and 8.
Dimensions in millimeters
a) Type A
Figure 1 Assembly of steel rollers for nominal sizes 150, 200 and 250 (type A and type B)
Dimensions in millimeters
b) Type B
Key:
1 — roller;
2 — axle;
3 — bush;
4 — dust cover to apply on type B only;
5 — N-M6 bolt.
a Drain hole.
Figure 1 (Continued)
Dimensions in millimeters
a) Type A
Figure 2 Assembly of steel rollers for nominal sizes 300 and above (type A and type B)
b) Type B
Key:
1 — roller;
2 — axle;
3 — bush;
4 — dust cover to apply on type B only;
5 — N-M6 bolt.
a Drain hole.
Figure 2 (Continued)
Dimensions in millimeters
Key:
1 — roller;
2 — dust cover to apply on type B only.
Figure 3 Detail of steel rollers for nominal sizes 150, 200 and 250 (type A and type B)
Key:
1 — roller;
2 — dust cover to apply on type B only.
Figure 4 Detail of steel rollers for nominal sizes 300 and above (type A and type B)
Table 1 Dimensions and SWL of steel rollers for type A and type B
Dimensions in millimeters
Nominal size Dn D1 D2 D3 D4 D5 R1 R2 R3 R4 H H1 H2 H3 H4 e
Table 1 (Continued)
Nominal size Dn h h1 h2 Set screw T T1 N Height of weld leg SWLb Calculated weightc
kg
θ = 90°a θ=0°
s z1 kN t kN t Type A Type B
a θ is the relative angle of ropes on the steel roller (refer to Annex A).
b The SWL is the maximum applicable rope tension based on 90° ( θ = 90°) and 180° ( θ = 0°) defection of rope direction by steel roller.
The SWLs shown in this table are for reference only. These are based on the loadings as mentioned in Annex A.
The “SWL” may be adjusted depending on the actual loading conditions, and the actual marking shall be as agreed between the user and the manufacturer.
c The calculated weight is for reference only.
a) Bush
Figure 5 Detail of axle and bush for steel rollers (type A and type B)
b) Axle
a Thread for grease nipple.
b Grease way.
Figure 5 (Continued)
Table 2 Dimensions of axle and bush for steel rollers (type A and type B)
Dimensions in millimeters
Nom. size Dn Axle Bush
d1 d2 d3 H h1 h2 h3 h4 h5 b m×d D4 D5 D6 H h5 h6 s
Key:
1 — roller;
2 — axle;
3 — upper bush;
4 — lower bush;
5 — N-M6 bolt.
Figure 6 Assembly of steel rollers for type C
Foreword II 1 Scope 2 Normative References 3 Terms and Definitions 4 Classification 5 Dimensions 6 Materials 7 Construction 8 Manufacturing and Inspection 9 Marking Annex A (Informative) Basis for Strength Assessment of Steel Rollers Annex NA (Informative) Marking Bibliography
Ships and Marine Technology — Ship's Mooring and Towing Fittings — Steel Rollers
1 Scope
This standard specifies the design, size and technical requirements for steel rollers.
This standard is applicable to the design, manufacture and acceptance of steel rollers.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 13767 Ships and Marine Technology — Ship's Mooring and Towing Fittings — Shipside Roller Fairleads
ISO 13776 Ships and Marine Technology — Ship's Mooring and Towing Fittings — Pedestal Fairleads
IMO Circular MSC/
Circ.1175 Guidance on Shipboard Towing and Mooring Equipment
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
safe working load (SWL)
maximum load, in kN, on the rope that should normally be applied in service conditions
4 Classification
4.1 Types
Depending on the construction, steel rollers shall be classified as the following three types:
Type A: made of steel casting without upper dust cover;
Type B: made of steel casting with upper dust cover;
Type C: made of steel plate with dust cover.
4.2 Nominal sizes
The nominal sizes of steel rollers are: 150, 200, 250, 300, 350, 400, 450 and 500.
The nominal sizes, Dn, are denoted by reference to the outside diameter of the roller in millimeters from a basic series of preferred numbers.
5 Dimensions
Steel rollers have dimensions and particulars in accordance with Tables 1, 2, 3 and 4, and Figures 1, 2, 3, 4, 5, 6, 7 and 8.
Dimensions in millimeters
a) Type A
Figure 1 Assembly of steel rollers for nominal sizes 150, 200 and 250 (type A and type B)
Dimensions in millimeters
b) Type B
Key:
1 — roller;
2 — axle;
3 — bush;
4 — dust cover to apply on type B only;
5 — N-M6 bolt.
a Drain hole.
Figure 1 (Continued)
Dimensions in millimeters
a) Type A
Figure 2 Assembly of steel rollers for nominal sizes 300 and above (type A and type B)
b) Type B
Key:
1 — roller;
2 — axle;
3 — bush;
4 — dust cover to apply on type B only;
5 — N-M6 bolt.
a Drain hole.
Figure 2 (Continued)
Dimensions in millimeters
Key:
1 — roller;
2 — dust cover to apply on type B only.
Figure 3 Detail of steel rollers for nominal sizes 150, 200 and 250 (type A and type B)
Key:
1 — roller;
2 — dust cover to apply on type B only.
Figure 4 Detail of steel rollers for nominal sizes 300 and above (type A and type B)
Table 1 Dimensions and SWL of steel rollers for type A and type B
Dimensions in millimeters
Nominal size Dn D1 D2 D3 D4 D5 R1 R2 R3 R4 H H1 H2 H3 H4 e
Table 1 (Continued)
Nominal size Dn h h1 h2 Set screw T T1 N Height of weld leg SWLb Calculated weightc
kg
θ = 90°a θ=0°
s z1 kN t kN t Type A Type B
a θ is the relative angle of ropes on the steel roller (refer to Annex A).
b The SWL is the maximum applicable rope tension based on 90° ( θ = 90°) and 180° ( θ = 0°) defection of rope direction by steel roller.
The SWLs shown in this table are for reference only. These are based on the loadings as mentioned in Annex A.
The “SWL” may be adjusted depending on the actual loading conditions, and the actual marking shall be as agreed between the user and the manufacturer.
c The calculated weight is for reference only.
a) Bush
Figure 5 Detail of axle and bush for steel rollers (type A and type B)
b) Axle
a Thread for grease nipple.
b Grease way.
Figure 5 (Continued)
Table 2 Dimensions of axle and bush for steel rollers (type A and type B)
Dimensions in millimeters
Nom. size Dn Axle Bush
d1 d2 d3 H h1 h2 h3 h4 h5 b m×d D4 D5 D6 H h5 h6 s
Key:
1 — roller;
2 — axle;
3 — upper bush;
4 — lower bush;
5 — N-M6 bolt.
Figure 6 Assembly of steel rollers for type C
Contents of GB/T 36664-2018
Foreword II
1 Scope
2 Normative References
3 Terms and Definitions
4 Classification
5 Dimensions
6 Materials
7 Construction
8 Manufacturing and Inspection
9 Marking
Annex A (Informative) Basis for Strength Assessment of Steel Rollers
Annex NA (Informative) Marking
Bibliography
