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CAT Excavator Compatible Attachments by TGEC

CAT's 300-Series covers a wide operating range, which means attachment requirements differ significantly between a compact machine working on residential utility lines and a large model handling 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 and application.

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 the carrier's auxiliary hydraulic specifications. TGEC compact-class attachments are sized to maintain machine balance without compromising 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 relevant. TGEC medium-class attachments use reinforced steel structures and wear-resistant cutting edges for continuous professional workloads.

For CAT machines operating in mining and quarry environments, attachment durability under high-impact, high-abrasion conditions is a primary selection factor. TGEC mining-class buckets and rippers use hardened wear surfaces and reinforced joint structures for rock and ore handling, while hydraulic breakers are configured to the carrier's specified flow and pressure.

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 hydraulic flow and operating pressure. Auxiliary flow varies by model, configuration and circuit — use the machine's specified auxiliary flow and pressure when selecting breakers, grapples, pulverizers and other hydraulic attachments. Compact models, medium models and large mining-class machines each require different hydraulic configurations; TGEC configures each attachment against the carrier's data plate specifications rather than a generic class rating.

Operating weight is the second critical factor. A breaker sized for a large 390-class machine would be significantly overdimensioned for a compact 301.5 and could place unacceptable loads on its boom, swing system and hydraulics. TGEC sizes each attachment to the carrier's weight class and lift chart — 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.

The mounting interface is the third consideration. Many 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 matched to the target CAT model's coupler dimensions. 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 achieve 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 TGEC provide custom or private-label attachments for CAT excavator dealers and rental fleets?+

Yes. TGEC provides custom and private-label services for CAT attachment dealers and rental fleets, including tailored 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 verify it.

Send us your CAT model number or serial — whether it's a current model or an older 300-Series unit. Our team will review the auxiliary hydraulic flow, CW coupler or pin-on compatibility, and operating weight, then recommend a suitable attachment configuration with the relevant specifications.

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