350-0452 3500452 final drive for Caterpillar 316E midi excavator

316E Final Drive for CAT Excavator spare parts 350‑0452 3500452 Axial Piston Motor OEM

Product Overview

The 316E sits in the sweet spot of the Caterpillar range — a 16‑ton machine with the dig depth of a 20‑ton but the trailerability of a compact, which is why you find it on roadwork, residential subdivisions and utility crews that move between sites every week. Under each track frame, the axial piston motor and planetary reducer — references 350‑0452 and 3500452 — takes high‑flow oil from the main pump and trades speed for the low‑speed torque needed to drag that frame over rutted shoulders and muddy trench spoil.

On a worked E‑series CAT, the drive rarely gives a dramatic warning. It whispers first. The operator notices the machine drifts a shade off line crossing a flat driveway, that one track warms faster than the other after a short trundle, and that a new, faint whine creeps into the circuit the moment the bucket crowds a trench wall. By the time a track hesitates on a curb, the piston block and valve plate have already been lapping fine steel swarf into the travel oil. That debris then scores every surface it touches, turning a motor rebuild into a whole‑circuit cleanup. This OEM‑grade unit arrives as one sealed, bench‑tested motor‑and‑reducer assembly, so the worn drive lifts out whole and the replacement drops straight into the original mounting.

Core Advantages

1. A lapped piston group that holds pressure in tight‑spot work
Subdivision and utility sites demand fine track modulation. The cylinder block, piston shoes and valve plate are finished to close running clearance, so high‑pressure oil does not bleed internally. The operator can feather the machine between foundations without a jerky, grabbing track.

2. Hardened gears that shrug off curb climbs and trench edges
A day on a 316E means pulling up over curbs, backing across spoil piles and repeated reversing. The planetary gear set uses case‑hardened, ground teeth with controlled backlash, spreading drive torque across several teeth at once instead of hammering a few.

3. Fresh sealing against mud, dust and pressure washing
Urban yards throw up mud, dust and pressure‑washer runoff. Every shaft and housing joint gets a new lip seal before the drive leaves the shop. That seal integrity is what decides whether the drive reaches its first overhaul or fails early.

4. One bolt‑in unit for a fast turnaround on a rented machine
Many 316Es work for rental fleets where a parked machine means lost contract revenue. Motor and reduction arrive mated and bench‑checked, so the fitter swaps the whole drive rather than building it on the floor — often the same afternoon.

5. OEM‑spec tolerances without the dealer exchange price
Renewing the drive to original clearances restores the 316E's mobility at a fraction of a CAT dealer exchange unit, with sample supply and batch pricing for workshops keeping several E‑series machines on the books.

Manufacturing & Quality Control

The OEM‑grade route follows controlled specification: material certificates on incoming steel, precision CNC machining of housings and gears, case hardening of wear surfaces, and clean‑area assembly. Before packing, each drive runs on a hydraulic stand while output torque, pressure drop and running noise are logged across its speed range; units that leak, bind or read outside spec are reworked rather than shipped. The finished assembly is fogged with preservation oil, its ports plugged, and it sits on shock‑absorbing dunnage inside a sealed crate for sea and road freight.

Frequently Asked Questions

Q1: How do I confirm 350‑0452 matches my 316E?
A: Read the tag on your existing drive against 350‑0452 or 3500452 and send the machine serial number. E‑series build variants can differ, so we cross‑check before dispatch.

Q2: Does this come with the sprocket?
A: The listing is the complete motor and planetary reduction. The sprocket itself usually transfers over; if yours is hooked, ask and we will quote a fresh one at the same time.

Q3: What should the fitter check after installation?
A: Torque the mounting bolts to spec, bleed air from the travel circuit, top up the oil, and run a slow no‑load track test before digging. Take the first shift easy on loaded grades to seat the new gears and seals.

Q4: What voids the warranty?
A: Manufacturing and material defects are covered. Damage from contaminated oil, debris in the motor, a stalled track forced into movement, overload or a botched install is excluded. Photograph any arrival damage before uncrating.