JMA Compatibility Check
CAT 303 Bolt-On Head for Hydraulic Hammer (40 mm Pins) 3-4.5 tons – JMASB40EBH
- Fits CAT 303 and similar 3–4.5 ton excavators · 40 mm pins
- For the JMASB40EBH hammer · 136 mm ear to ear · 200 mm center to center · AR400 steel
- Pins included
- Ships from Miami, FL the same business day when ordered before 2 PM ET · US-based support
- 2-year warranty · lifetime warranty on structural welds
Goes with the JMASB40EBH hammer
Fits CAT 303 and similar machines: 40 mm pins · 136 mm ear-to-ear · 200 mm centers.
The hammer
Chisels
| Coupler Type | Pin On Style |
|---|---|
| Carrier Weight Class (tn) | 3 - 4.5 tons |
| Carrier Weight Class (lb) | 6,000 - 9,000 lb |
| Front Pin Diameter (mm) | 40 mm |
| Rear Pin Diameter (mm) | 40 mm |
| Rear Ear to Ear (mm) | 136 mm |
| Front Ear to Ear (mm) | 136 mm |
| Center to Center (mm) | 200 mm |
| Material Type | AR400 Steel |
| Finish | Powder-Coated Green |
| Variation Name | ***JMA Bolt-On Head Adapter – Hydraulic Hammer Mount - JMAHSB40CAT303 |
CAT 303 Bolt-On Head for Hydraulic Hammer (40 mm Pins) 3-4.5 tons - JMASB40EBH. Fits CAT 303 and similar 3–4.5 ton excavators, 40 mm pins. Included: pins. Price: $787.00, in stock, ships from Miami, FL the same business day when ordered before 2 PM ET.
This bolt-on head mounts the JMA JMASB40EBH hydraulic hammer (1,018 Joules) to a CAT 303 or any similar 3-4.5 ton excavator. Match three numbers on your machine before you order: 40 mm pins, 136 mm ear to ear and 200 mm center to center. Built from AR400 steel, powder-coated green; it weighs 166 lbs. JMAX, our quality team, checks every head before it ships from Miami, FL. Structural welds carry a lifetime warranty.
Are pins included?
Yes. Pins are included.
Will it fit my machine?
Tell us your machine, we confirm the fit before shipping. Pin-on attachments are sized from your machine's pin diameter, pin-to-pin distance and ear width. If your machine has a quick coupler, is a long-reach model or was modified, measure those three and send them to us before you order. If we confirmed the fit from your accurate machine and coupler details and our recommendation is wrong, report it within 14 calendar days of delivery: the JMA Fitment Money-Back Promise gives a full product refund, outbound and return freight covered, no restocking fee.
How fast does it ship?
In-stock items ship from Miami, FL the same business day when ordered before 2 PM ET; orders after 2 PM ET, on weekends or on holidays ship the next business day. Carrier estimates for the lower 48, in business days from the ship date: parcels of 50 lb or less 5–7 standard or 2–4 expedited; LTL freight over 50 lb 7–10 standard or 4–6 expedited, usually with a delivery appointment and a signature. Outside the lower 48, shipping is quoted. Inspect it before you sign and note any damage on the delivery receipt.
What does the warranty cover?
Defects in materials and workmanship are covered for 2 years or 2,000 operating hours, whichever comes first: year 1 parts and pre-approved labor, year 2 parts only. Lifetime warranty on structural welds. Teeth, cutting edges, pins and bushings are wear items and are not covered. Get our written approval before any repair.
Can I return it?
Yes, for standard products: a refund within 14 calendar days of delivery, or store credit within 30, if it is unused, uninstalled, free of soil and grease, and in its original packaging with all hardware. Get a Return Authorization Number (RAN) from us first. The buyer pays return shipping unless the item was defective, damaged or wrong because of our error, or you can drop it off at our warehouse, 8068 NW 29th St, Doral, FL, Monday to Friday, 9 AM to 5 PM, with your RAN. A restocking fee applies to non-defective refunds; store credit has no restocking fee. Original outbound shipping is not refunded on change-of-mind returns. Installed or used attachments can't be returned.
DISCLAIMER
JMA Attachments provides heavy machinery attachments that must be used with care by
competent individuals under supervision, if necessary. Use of any equipment, including ours, involves
potential risk of injury. You accept and assume full responsibility for any and all injuries, damages
(both economic and non-economic), and losses of any type that may occur, and release JMA Attachments,
its insurers, employees, officers, directors, associates, and agents from all claims and liabilities
resulting from the use of said equipment.
Except for the written JMA Attachments Warranty (/warranty/), JMA Attachments makes no other warranty, express or implied, including merchantability or fitness for a particular purpose. BUYER ASSUMES ALL LIABILITY IN THE USE OF THE EQUIPMENT. The purchaser must ensure operators are properly trained and comply with all laws and regulations. You agree to be legally bound by this disclaimer by purchasing and using our products. If you disagree, do not proceed with purchasing or using the equipment.
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