ISO 500-3:2014 pdf free
ISO 500-3:2014 pdf free.Agricultural tractors – Rear-mounted power take-off types 1, 2, 3 and4
This part of ISO 500 specifies the manufacturing requirements for, and the location of, rear-mounted power take-offs (PTOs) of types 1, 2, 3, and 4 on agricultural tractors.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 6508 (all parts), Metallic materials一Rockwell hardness test
3 PTO location
The location of the PTO axis shall lie within the shaded rectangle shown in Figure 1 and in accordance with Table 1, parallel to the longitudinal axis of the tractor and should be parallel to the ground within ±3°.
The values of the dimension h are for normal agricultural applications (see Figure 1 and Table 1). On tractors especially designed for high ground clearance, such as working in standing vegetable crops or sugar cane, hmax, can exceed the given values. On agricultural tractors designed for low ground clearance, such as lawn mowing or ground care which require a low centre of gravity, for narrow-track tractors, and for track-laying tractors, hmin, can be less than the given values.
For tractors that can accommodate multiple PTO types, hmax shall be the value for the largest PTO type specified for the tractor.
4 Manufacturing requirements一Main PTO and spline dimensions
The dimensions of the rear PTO on agricultural tractors and the mating part of the PTO drive shaft shall comply with:
-Figure 2 and Table 2, for PTO dimensions;
-Eigure 3 and Table 3, for external, straight-sided spline dimensions一Type 1;
-Figure 4 and Table 4, for internal straight- sided spline dimensions一Type 1;
-Figure 5 and Table 5, for external, involute spline dimensions一Type 2;
-Figure 6 and Table 6, for internal, involute spline dimensions一Type 2;
-Figure 7 and Table 7 for external, involute spline dimensions一Type 3;
-Figure 8 and Table 8, for internal, involute spline dimensions一Type 3;
-Figure 9 and Table 9, for external, involute spline dimensions一Type 4;
-Figure 10 and Table 10, for internal, involute spline dimensions- Type 4.
The hardened portion of the splines shall have a minimum surface hardness of 48 HRC when tested in accordance with ISO 6508 (all parts).
NOTE For general spline information, including inspection, see ISO 4156 (all parts).ISO 500-3 pdf download.
