SLAMTEC RPLIDAR S3 lidar: 55.6 mm base, M2.5 mounting holes and optical window height — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/slamtec-rplidar-s3/  (sheet CC BY 4.0)
Basis: SLAMTEC RPLIDAR S3 datasheet v1.0, Figure 4-1 Mechanical Dimensions.
Catalog version: 2026-10-20

Overall (mm): length 55.6, width 55.6, height 41.3
- Datum: bottom mounting face on z=0, centred on X and Y; the cable exits on the −Y side.
- Base 55.60 × 55.60 × 23.35 high; overall height 41.30 to the top of the optical housing (Ø50.2, chamfered to Ø41.2 at the top).
- Four M2.5 threaded holes in the bottom face on a 43.00 × 43.00 square centred on the base, max screw engagement 4.0 mm.
- Optical band z=23.35..41.30 must stay clear through the full 360°.
- Not modelled: cable, strain relief and XH2.54-5P plug (the cable exit reaches 59.80 from the +Y edge), the bottom recess and case screws.
- Dimensions are exact nominal mm; the housing diameter is scaled from the drawing.

hole  x (mm)  y (mm)  thread  depth (mm)
1  -21.5  -21.5  M2.5  4.0
2  21.5  -21.5  M2.5  4.0
3  -21.5  21.5  M2.5  4.0
4  21.5  21.5  M2.5  4.0

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- SLAMTEC: RPLIDAR S3 datasheet v1.0 (CN) — web — Publisher's page; dimensions are facts — https://bucket-download.slamtec.com/df7f5cd59db82931de79c9f2106c2cb85e10418b/SLAMTEC_rplidar_datasheet_S3_v1.0_cn.pdf
- SLAMTEC: RPLIDAR S3 specification image — web — Publisher's page; dimensions are facts — https://image.slamtec.com/images/s3/pc/s3-spec.webp
- OpenZeka: SLAMTEC RPLIDAR S3 datasheet v1.0 (EN) — web — Publisher's page; dimensions are facts — https://openzeka.com/wp-content/uploads/2023/10/SLAMTEC_rplidar_datasheet_S3_v1.0_en.pdf

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/slamtec-rplidar-s3/index.json
API: https://xemstudio.com/api/geometry?object=slamtec-rplidar-s3