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CAT Excavator Compatible Attachments by TGEC

CAT's 300-Series covers a wider operating range than most competing brands, which means attachment requirements shift dramatically between a CAT 303.5 working on residential utility lines and a CAT 320 handling heavy demolition or quarry work. TGEC develops CAT excavator attachments with this range in mind, matching attachment weight, hydraulic demand and structural strength to the specific machine class.

For compact CAT machines such as the 301.7, 303.5, 305 and 306, operators commonly need digging buckets, hydraulic breakers and small grapples for landscaping, utility installation and interior demolition. These machines require attachments that preserve zero-tail-swing maneuverability and match lower auxiliary hydraulic flow rates. TGEC compact-class attachments are sized to maintain machine balance without sacrificing breakout force.

Medium CAT excavators including the 312, 315 and 320 serve as the workhorses of commercial construction, site prep and medium demolition. This class supports a broader attachment range — heavy-duty buckets, hydraulic breakers, demolition grapples, rippers and pulverizers — where structural reinforcement and higher hydraulic output become critical. TGEC medium-class attachments use reinforced steel structures and wear-resistant cutting edges to handle continuous professional workloads.

For CAT machines operating in mining and quarry environments, attachment durability under high-impact, high-abrasion conditions is the primary selection factor. TGEC mining-class buckets and rippers are engineered with hardened wear surfaces and reinforced joint structures to withstand continuous rock and ore handling, while hydraulic breakers are configured for the higher carrier flow and pressure typical of larger CAT excavators.

CAT Excavator Models

Mini Excavators — Standard

CAT 301.5 Mini Excavator · CAT 301.6 Mini Excavator · CAT 302.5 Mini Excavator · CAT 307.5 Mini Excavator

Mini Excavators — Compact Radius (CR)

CAT 301.7 CR Mini Excavator · CAT 303.5 CR Mini Excavator · CAT 304 CR Mini Excavator · CAT 305 CR Mini Excavator · CAT 306 CR Mini Excavator · CAT 308 CR Mini Excavator

Medium Excavators

CAT 311 Excavator · CAT 312 Excavator · CAT 313 Excavator · CAT 315 Excavator · CAT 320 Excavator · CAT 323 Excavator · CAT 326 Excavator

Large Excavators

CAT 330 Excavator · CAT 336 Excavator · CAT 340 Excavator · CAT 345 Excavator · CAT 349 Excavator · CAT 352 Excavator · CAT 374 Excavator · CAT 390 Excavator

CAT offers both current and non‑current excavator models. Custom attachments are available for other CAT models and configurations based on machine specifications — including older 300-Series machines not listed here.

CAT Compatible Attachments

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How to Select Attachments for CAT Excavator Classes

Begin with your CAT excavator's auxiliary flow rating. Compact models like the 301.5 through 308 typically deliver 20‑40 L/min — perfectly matched for digging buckets, small breakers (up to 300 J), light grapples, and augers for landscaping, utility work, and residential construction. Medium excavators in the 311 through 326 range push 40‑60 L/min, supporting 500‑800 J breakers, demolition grapples, rippers, and heavier buckets for commercial construction and site preparation. Large 330 through 390 class machines with 60‑80 L/min can run 1000‑1500 J breakers, heavy rock buckets, pulverizers, and high-flow attachments for quarry and mining operations.

Operating weight is the second critical factor. A breaker that matches a 390's hydraulic output and mass would severely damage a 301.5's boom and swing motor. TGEC sizes each attachment to the carrier's weight class — compact attachments for sub‑6‑ton machines, medium attachments for 6‑15‑ton excavators, large attachments for 15‑40‑ton units, and heavy-duty attachments for 40‑ton‑plus CAT models — ensuring structural integrity and safe lifting capacity.

The mounting interface is the third consideration. Most current CAT excavators use the CW quick coupler, while older machines or specific configurations may have pin-on buckets with varying ear spacing and pin diameter. TGEC supplies both CW‑compatible plates and direct pin‑on attachments, with each unit verified against the target CAT model's coupler dimensions prior to delivery. Reach out to TGEC with your machine serial number and we'll confirm the correct mounting configuration.

FAQ

Are TGEC attachments compatible with CAT CW (Caterpillar Wedge) couplers?+

It may be possible, depending on the CAT model and CW coupler generation. TGEC manufactures CW-compatible mounting plates and adapters to the specified wedge dimensions and pin spacing for each 300-Series model. Send your coupler specification and CAT model, and our team will confirm whether a standard CW mount fits or whether a custom adapter is needed.

What auxiliary hydraulic flow is needed for a TGEC breaker on a CAT 305 or 308?+

Hydraulic breaker selection depends on the CAT model's auxiliary hydraulic flow rate and operating pressure. TGEC configures each breaker to the specific carrier's hydraulic specifications to ensure designed impact energy without overloading the system. Provide your CAT model and auxiliary hydraulic specs, and our engineering team will recommend the appropriate breaker configuration.

Can TGEC supply pin-on attachments for CAT excavators without a quick coupler?+

Yes. TGEC provides both CW-compatible quick-coupler mounts and direct pin-on attachments for CAT excavators. Pin-on configurations are built to the specified ear spacing, pin diameter and bracket geometry of the target CAT model. Send your machine's mounting dimensions and our team will confirm the appropriate configuration.

Which TGEC attachments are suitable for CAT 320 demolition work?+

For CAT 320 demolition applications, TGEC commonly recommends hydraulic breakers (box-silenced for urban sites or top-type for heavy demolition), concrete pulverizers for concrete recycling, and demolition grapples for material sorting. The suitable combination depends on the specific demolition type, hydraulic output and coupler configuration of the CAT 320 unit.

Can TianGe provide OEM CAT excavator attachments for dealers and rental fleets?+

Yes. TGEC provides OEM services for global CAT attachment dealers and rental fleets, including customized mounting configurations, customer branding, color matching, special attachment designs and export packaging. Dealers and rental companies can consolidate requirements across multiple CAT carrier types and request a project-specific quotation based on model, attachment type and order quantity.

How long does production take for a custom CAT CW coupler adapter?+

Lead time depends on the attachment type, CW coupler specification and order volume. Standard CW-compatible configurations generally follow a simpler production process, while fully custom adapter designs may require additional engineering and testing. Contact us with your CAT model and coupler details for a production schedule based on your specific order.

Do TGEC mining-class buckets fit CAT large excavators such as the 336 or 349?+

TGEC mining-class buckets and rippers can be configured for CAT large excavators depending on the specific model's mounting geometry, pin configuration and hydraulic requirements. Compatibility for models outside the confirmed 300-Series compact and medium range requires engineering review. Send your CAT model specifications and our team will assess feasibility and provide a configuration recommendation.

Not sure which CAT attachment fits your 300‑Series machine? We'll figure it out.

Send us your CAT model number or serial — whether it's a current model or an older 300‑Series unit. Our team will verify hydraulic flow, CW coupler or pin‑on compatibility, and operating weight, then recommend the right attachment with specs and pricing. No guesswork, no wrong parts.

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