Excavator Mechanical Quick Hitch Adapter S30 to S40 / S40 to S50 Coupler Conversion

Product Overview

The Excavator Pin-On Attachment Bracket is the foundational connection component between an excavator's dipper arm and the full range of pin-on attachments — including buckets, hydraulic hammers, augers, compaction plates, rippers, grading blades, and quick hitch couplers — providing the structural interface that determines the strength, stability, and dimensional accuracy of every attachment connection made on the machine. Available in eight standard configurations from S30 through to S80, covering excavator operating weights from 1 tonne to 25 tonnes, this comprehensive bracket range ensures that operators, plant hire companies, attachment suppliers, and equipment dealers can source the correct pin-on hitch plate for virtually any excavator class in a single product line — eliminating the need to source brackets from multiple suppliers or accept non-standard fitments that compromise attachment alignment, engagement accuracy, or structural integrity under load.

Every bracket in the E-BGD series is manufactured to exacting standards using flux cored wire welding throughout all structural joints — a welding process that delivers significantly deeper penetration, higher tensile strength, and greater resistance to fatigue cracking than standard MIG welding methods commonly used in lower-specification bracket manufacturing. All primary welds are beveled prior to welding to maximise material penetration at the joint interface, ensuring that the weld cross-section achieves full fusion with the parent steel rather than surface bonding that can fail under the cyclic impact loads generated during heavy excavation, rock breaking, and demolition operations. Pin bore holes are precision drilled to tight dimensional tolerances to ensure accurate alignment with the excavator dipper arm pins and attachment pin eyes, eliminating the play, rattle, and accelerated wear that result from loose-fitting or hand-cut pin bores in lower-quality bracket alternatives.

Eight standard model configurations cover the complete range of excavator classes used across the construction, mining, civil works, and demolition industries. The ME-S30 (290 × 205 × 50 mm, 5 kg) and ME-S30-150 (260 × 172 × 50 mm, 4 kg) serve 1–2 tonne mini excavators used in confined access, landscaping, and utility works. The ME-S40 (380 × 238 × 55 mm, 10 kg) covers 2–3.5 tonne compact excavators for residential construction and drainage applications. The E-S45 (520 × 338 × 70 mm, 21 kg) addresses 4–6 tonne machines, while the E-S50 (520 × 318 × 70 mm, 22 kg) serves the 6–8 tonne class widely used in road works and general civil construction. The E-S60 (600 × 398 × 85 mm, 40 kg) covers 10–14 tonne excavators for heavy civil and pipeline works, the E-S70 (740 × 518 × 115 mm, 76 kg) serves 16–18 tonne machines in quarrying and major infrastructure, and the E-S80 (830 × 658 × 135 mm, 109 kg) extends coverage to 20–25 tonne large excavators deployed in mining, bulk earthworks, and large-scale demolition projects.

The pin-on bracket serves as the universal foundation for all attachment configurations on the host excavator, and its dimensional accuracy directly determines the performance and longevity of every attachment used on the machine. A correctly specified and precisely manufactured bracket ensures that quick hitch couplers engage and lock without play, that direct pin-on attachments align accurately with the dipper arm geometry, and that the full rated load capacity of the attachment is transferred through the bracket to the machine structure without stress concentration, deformation, or fatigue failure at the weld joints or pin bore interfaces. Selecting the correct bracket standard for your excavator's dipper arm pin spacing and diameter is therefore a critical step in any attachment specification or replacement process, and the S30–S80 range covers the pin geometries of all major excavator manufacturers including Komatsu, Hitachi, Volvo, Caterpillar, Doosan, Hyundai, Kobelco, and Liebherr across their respective machine classes.

The Excavator Pin-On Attachment Bracket range is the preferred choice for plant hire companies standardising their attachment fleet, contractors replacing worn or damaged brackets on working machines, attachment manufacturers supplying brackets as part of a complete attachment assembly, and equipment dealers sourcing replacement hitch plates for customer machines across all excavator size classes. Non-standard configurations, extended axle bases, and custom pin diameters are available upon request for machines with non-standard dipper arm geometry or specialist attachment requirements. Use the specification table below to identify the correct model for your excavator's operating weight and pin configuration, or contact our team for technical advice on bracket selection, brand-specific compatibility confirmation, and volume pricing for fleet and dealer applications.

Details

Features:

·Adapter Bracket Hitch

·Welded with flux cored wire for the best possible strength

·Beveled welds tops the penetration of the material

·Drilled holes for best fitting

Specifications:

Technical Drawing: