SPEC SHEET · K-BSB-57-S · REV. 03 · 2026

57" BEAD SEAT BAND (WITH SURE LOCK)
SPEC SHEET

Part code
K-BSB-57-S
Diameter
57 in / 1 448 mm
Rated load
220 t
Compliance
ISO 4250-3 · AS 4457 · GB/T 2883
01 · DIMENSIONS

CRITICAL DIMENSIONS

Cross-section drawing of the K-BSB-57-S rim assembly. Five reference dimensions (A–E) are CNC-machined to the tolerances called out in the table and verified on a 5-axis CMM before every unit ships.

57" BEAD SEAT BAND (WITH SURE LOCK) cross-section dimensions
Figure 1 — Cross-section & dimensionsdrawing K-BSB-57-S · rev. 03 · 2026
REFDIMENSIONVALUETOLERANCE
ABand overall length229 mm±0.30 mm
BBead seat heel width32 mm±0.10 mm
CBead seat ⌀1 447.8 mm±0.20 mm
DSure-lock retention groove25 mm±0.10 mm
02 · ASSEMBLY

WHEEL-END ANATOMY

The complete 57" BEAD SEAT BAND (WITH SURE LOCK) wheel-end is a five-piece assembly. Every Kelios rim ships as a matched set — rim base, lock ring, side rings, and bead seat band — with the OEM-supplied hub remaining factory original.

57" BEAD SEAT BAND (WITH SURE LOCK) wheel-end anatomy with labeled components
Figure 2 — Wheel-end anatomycross-section · five-piece assembly
1
Side ring
Pairs with K-SR-57-1 / K-SR-57-2 / K-SR-57-3
2
Bead seat band
This unit — sure-lock retention groove for high-load fleets
3
Lock ring
Pairs with K-LR-EU57 / K-LR-3I57 — engages sure-lock groove
4
Rim base
Pairs with K-RB-K930E7P — Komatsu 930E 7-piece
5
Wheel hub
OEM-supplied — high-load Cat / Belaz / Komatsu 57" fits
03 · FEA

FINITE ELEMENT ANALYSIS

Every Kelios rim design is validated under 1.4× rated load in a Von Mises FEA solver before tooling is cut. The K-BSB-57-S was meshed at refined element size with concentration at the lock-ring seat and bead radii — the two locations where field failures historically initiate.

57" BEAD SEAT BAND (WITH SURE LOCK) FEA stress visualization with Von Mises legend
Figure 3 — Von Mises stress & deformationsolver: SolidWorks Simulation · load case: 1.4× rated
Max Von Mises stress
6.85×10⁷ N/m²
Peak stress under 1.4× rated load — at the sure-lock groove.
Yield safety factor
2.2×
Vs. HSLA 7068-T6 — 580 MPa yield.
Mesh elements
1.08M
Tetrahedral mesh — 0.3 mm element size at sure-lock groove.
Deformation (max)
1.72mm
Elastic deformation under peak load — fully recovered.

NEED THE FULL 148-PAGE 57" BEAD SEAT BAND (WITH SURE LOCK) SPEC PACK?

The complete K-BSB-57-S catalog ships as a signed PDF with all five component drawings, the FEA report, material certificates, and a heat-lot traceable QC sheet for every unit you order.

Kelios — OTR Wheels Engineered to Endure