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SAE J4002 (FEB2022)

Current Revision

H-Point Machine (HPM-II) Specifications and Procedure for H-Point Determination - Auditing Vehicle Seats

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This SAE Standard provides the specifications and procedures for using the H-point machine (HPM 2x) to audit vehicle seating positions. The HPM is a physical tool used to establish key reference points and measurements in a vehicle (see Figure 1 and Appendix A ). The H-point design tool (HPD) is a simplified CAD 2x version of the HPM, which can be used in conjunction with the HPM to take the optional measurements specified in this document, or used independently during product design (see Appendix D ). These H-point devices provide a method for reliable layout and measurement of occupant seating compartments and/or seats. This document specifies the procedures for installing the H-point machine (HPM) and using the HPM to audit (verify) key reference points and measurements in a vehicle. The devices are intended for application at designated seating positions. They are not to be construed as tools that measure or indicate occupant capabilities or comfort. They are not intended for use in defining or assessing temporary seating, such as folding jump seats.

SDO SAE: SAE International
Document Number J4002
Publication Date Feb. 16, 2022
Language en - English
Page Count 52
Revision Level 202202
Supercedes
Committee
Publish Date Document Id Type View
Feb. 16, 2022 J4002_202202 Revision
Jan. 19, 2010 J4002_201001 Revision
Aug. 11, 2005 J4002_200508 Revision
Feb. 16, 2004 J4002_200402 Revision