Caterpillar 1U-3302 Bucket Tooth (J300)

What Cat Says About This Tip

Cat's own page for 1U-3302 describes it as the Cat J300 General Purpose Bucket Tip, lists the attributes "long, symmetric, top and bottom self-sharpening cavities" and "good strength, penetration and wear material", and states the applications as general excavation and loading at low to moderate impact and abrasion. On the tip family itself Cat writes that "long tips are symmetrical and are the baseline for other tip styles". That is the manufacturer's description of the geometry, and it holds for an aftermarket casting as well, because the J300 envelope is a fixed set of dimensions rather than a brand claim.

The number to remember is the pin: 14 mm diameter, 92 mm long. A US dealer listing for the 9J2308 pin describes it as approximately 3-5/8 in long by 9/16 in diameter and chamfered at both ends so it can be driven in from either side — the same pin the distributor wear charts give for the J300 system. A J250 tip will not lock onto a J300 nose and a J350 tip is too wide for it, so the pin and the nose, not the machine model, are what you order against.

The Three General Purpose Sizes Side by Side

Part number	Tip size	Overall length	Front width	Pin	Catalogue weight
1U-3252	J250	7.48 in / 190 mm	2.52 in / 64 mm	14 mm × 78 mm	~2.8 kg / 6.2 lb
1U-3302	J300	8.465 in / 215 mm	3.15 in / 80 mm	14 mm × 92 mm	~4.3 kg / 9.5 lb
1U-3352	J350	9.449 in / 240 mm	3.543 in / 90 mm	19 mm × 108 mm	~6.2 kg / 13.7 lb

Dimensions are from Cat's published part pages; the millimetre figures are our arithmetic at 25.4 mm per inch. Weights are quoted from aftermarket catalogue listings, not from Cat, and are indicative for the standard profile. Each step up in family adds about 25 mm of length, which is why the families are so easy to confuse on a bench and so easy to separate with a caliper.

Hardware and Adapters That Go With It

Item	Number	Size / note
Standard pin	9J2308	14 mm × 92 mm, slotted, chamfered both ends
Heavy duty pin	132-4766	Listed by Cat with 1U-3302 as an alternative pin
Pin retainer	8E-6259	Cat lists it in the same group as this tip
Pin retainer (alt)	149-5733	Described by Cat as a 14 mm J300 pin retainer
Weld-on adapter	8E-9490	Listed by Cat with 1U-3302; J300 nose required

Profiles sit inside the J300 family and share the same hardware: short general purpose, standard long, rock chisel and penetration profiles all take the 9J2308 pin and the 8E-6259 retainer, so a mixed box needs one pin number rather than four. Order one pin and one retainer per tooth — a lost pin takes the tooth with it on the next shift, and hardware is never the line to save money on.

Machines Cat Lists This Tip Against

Machine group	Models per Cat's compatible list
Track excavators	320D, 320E, 323 GC, 320 GC, 320, 322B L, 325B L, 330 L, 330B L, 312D / 312D2 / 312E / 312F, 316F L, 324E
Wheeled excavators	M312, M313C, M315C, M316C, M317, M318, M318D, M320, M322C
Wheel loaders	950M, 962H, 950G, 938G, 938F, 960F, 966C
Track loaders	953B, 953C, 955K, 955L, 963, 963B, 963C
Other	615, 623B-E and 623G wheel tractors / scrapers; 235C front shovel; EL180, EL200B, E200B

Note what that list does not do: it does not tell you the tooth on your bucket. Cat lists the same tip against machines from more than one generation because buckets were built with different shoes and rebuilt with different lips over the years. The two facts that settle the order are the pin — 14 mm across, 92 mm long — and the nose width at the pin line.

FAQ

Q: What pin and retainer does a Cat 1U-3302 tooth take?
A: The J300 system uses a 14 mm pin, 92 mm long. Aftermarket catalogues give 9J2308 as the standard J300 pin with retainer 8E-6259, and 132-4766 as the heavy duty pin alternative. Cat's page for 1U-3302 lists 132-4766 with the tip, and describes 149-5733 as a 14 mm J300 pin retainer, with 8E-6259 listed in the same group.

Q: Which adapter fits a 1U-3302 tooth?
A: A J300 weld-on adapter nose; Cat lists 8E-9490 with this tip. A J350 nose is wider at the pin line and a J250 nose is narrower, so neither will hold a J300 tip correctly. If the nose has an oval pin hole or a hollowed face, replace the adapter before fitting new teeth.

Q: Is 1U-3302 the same tooth as 1U-3352?
A: No. Both are general purpose long tips in the J series, but 1U-3302 is the J300 size at 8.465 in (215 mm) long and 3.15 in (80 mm) front width on a 14 mm pin, while 1U-3352 is the J350 size at 9.449 in (240 mm) long and 3.543 in (90 mm) front width on a 19 mm pin. Different size, different hardware, different adapter.