Attachments for a Caterpillar 310
A Caterpillar 310 is a 22,930 lb (10.4 t) excavator, which puts it in the 10–16 t mid-size class. It takes 50 mm bucket pins on a pin-on stick. 14 attachments in the Quarrymark range fit a Caterpillar 310: 3 digging buckets, 2 grapples, 2 hydraulic hammers, 2 quick couplers and 2 severe duty buckets, plus 2 thumbs and 1 bucket. None is graded a direct fit yet, but 2 are rated for this weight class and 12 need a mounting detail confirmed before they ship. Prices start at $1,243.20.
Caterpillar 310
| Operating weight | 22,930 lb · 10.4 t |
|---|---|
| Weight class | 10–16 t · mid-size |
| Bucket pin diameter | 50 mm |
| Coupler / interface | Pin-on |
| Machine type | Excavator |
| Attachments that fit | 14 (0 direct fit) |
Operating weight is from the manufacturer’s published spec sheet. Pin diameter and coupler style are derived from that weight against our own tonnage bands. They are the right starting point for a machine in this class, not a statement about your specific unit. Verify both against your OEM spec, or send us a photo of the stick end and we will confirm it before you order.
14 attachments for a 310
We grade the fit rather than answer yes or no. Direct fit means the weight class and the mounting both check out. Fits your class means the attachment is rated for a machine of this weight and mounts pin-on. Verify first means something, usually the pin diameter, needs confirming before it ships. Telling a contractor a bucket fits when it does not is how you earn a freight claim.
Everything that fits a Caterpillar 310
Digging Buckets for a 310
3 digging buckets
Check pin size
Check pin size
BorderlineGrapples for a 310
2 grapples
Borderline
BorderlineHydraulic Hammers for a 310
2 hydraulic hammers
Fits your class
BorderlineQuick Couplers for a 310
2 quick couplers
Check pin size
BorderlineSevere Duty Buckets for a 310
2 severe duty buckets
Check pin size
Check pin sizeThumbs for a 310
2 thumbs
Fits your class
Borderline
Buying attachments for a Caterpillar 310
What size bucket fits a Caterpillar 310?
Buckets from 8" up to 48" wide are rated for a Caterpillar 310. The widths we stock in this class are 8", 18", 30", 36", 42", 48". On a 10.4 t machine the narrow end of that range is the trenching and utility-line width, and the widest sizes are for grading and cleanup, where you are moving loose material rather than breaking ground. Go wider than the machine's rated capacity and you will feel it as lost breakout force and a tippy load at full reach, not as a fitment problem.
What pin size does a Caterpillar 310 use?
A Caterpillar 310 in the 10.4 t class typically runs 50 mm bucket pins on a pin-on connection. That is the number to check first, because it is the one that stops a bucket going on: the weight class tells you whether the machine can lift the attachment, the pin diameter tells you whether it will physically pin up. 12 of the 14 attachments listed here are the right weight class but drilled for a different pin. They are flagged "check pin size", and a bushing kit or a quick coupler resolves them. Pin diameter is derived from the machine's operating weight against our own tonnage bands, so measure yours or send us a photo of the stick end before ordering.
Can I run a hydraulic hammer on a Caterpillar 310?
Yes. 2 of our hammers are rated for a machine this size. They run 1,356–2,712 joules of impact energy, which is the range a 10.4 t carrier can actually feed. The constraint is hydraulic, not structural: the machine needs an auxiliary circuit with the flow and relief pressure the hammer is specified for, and a machine plumbed only for a thumb will not run a breaker without the second circuit. Check your auxiliary flow on the machine's spec plate, or send it to us and we will match the hammer to it.
Will a quick coupler fit a Caterpillar 310?
Yes. 2 couplers in our range are rated for a machine at 10.4 t. A coupler is the single best purchase on a 10.4 t machine that changes attachments more than once a day: it turns a twenty-minute pin-and-hammer job into a thirty-second swap from the seat, and it decouples you from the 50 mm pin diameter so you can buy attachments on price and spec instead of on drilling. Worth pairing with one of the 2 thumbs that fit this machine. A coupler and a hydraulic thumb together is the combination most contractors in this class end up running. Free freight applies over $750.
