The genuine XCMG 381600373 Locking Rod is a precision‑formed, high‑strength steel component used to secure adjustable linkages on motor grader circle drawbars, blade pitch mechanisms, and articulation locks. This OEM 381600373 locking rod features a forged clevis end, a hardened locking pin, and a captive spring‑loaded handle that provides positive engagement and vibration‑resistant retention. Manufactured from heat‑treated alloy steel (42CrMo4) with a corrosion‑resistant zinc‑nickel finish, the XCMG locking rod prevents unintended movement of circle shift cylinders, drawbar extension locks, and blade tilt adjusters. The 381600373 locking rod is a direct replacement for worn, bent, or missing rods on XCMG GR135, GR165, GR180, GR215, GR260, GR300, and GR350 motor graders.
The locking rod is typically used to fix the circle drawbar in a set position during grading or to lock the articulation joint for straight‑line travel. A damaged or missing rod allows the circle to drift, causing poor blade control and uneven grading. Replacing a faulty rod with genuine XCMG 381600373 restores positive locking, eliminates play, and improves operator safety.
This component is also found on blade side‑shift mechanisms and rear ripper lockouts. XCMG 381600373 ensures consistent clamping force, easy engagement even with debris, and long service life in demanding environments.
| Parameter | Specification |
|---|---|
| OEM Number | 381600373 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Locking Rod / Drawbar Lock Pin Assembly |
| Material | Alloy steel (42CrMo4 / AISI 4140), forged |
| Overall Length | 285 mm ±1.0 mm |
| Rod Diameter (Main Body) | 18 mm ±0.1 mm |
| Clevis Inside Width | 28 mm ±0.2 mm |
| Locking Pin Diameter | 16 mm ground (h7 tolerance) |
| Handle Type | Spring‑loaded T‑handle with captive ball detent |
| Hardness (Case) | 45‑50 HRC (induction hardened) |
| Core Hardness | 30‑36 HRC |
| Surface Finish | Zinc‑nickel plating (500h salt spray) + yellow chromate |
| Pull‑out Force (Locked) | ≥ 12 kN (2,700 lbf) static |
| Operating Temperature Range | -40°C to +150°C |
| Locking Mechanism | Spring‑loaded ball detent, audible click when engaged |
| Corrosion Test | 500h salt spray per ASTM B117 – no red rust |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 motor graders |
| Superseded Part Numbers | 381600355, 381600361, 381600368 |
The 381600373 locking rod fixes the circle drawbar to the main frame, preventing lateral drift during heavy cutting. It also locks the articulation joint for highway travel.
Without a functional locking rod, the circle can shift under load, causing the blade to cut a curve instead of a straight line. This forces the operator to constantly correct steering, reducing productivity.
The spring‑loaded detent provides a positive indication of engagement – you hear an audible click. A worn detent may allow the rod to disengage, creating a safety hazard. Replace with genuine 381600373.
Each 381600373 locking rod is forged as a single piece, eliminating weld joints that could fail under shock loads. The forging aligns grain flow with the part’s stress lines, maximizing fatigue strength.
After rough machining, the rod is through‑hardened to 34 HRC, then the locking pin area is induction hardened to 48 HRC for wear resistance. The T‑handle is shot‑peened to prevent stress cracking.
XCMG tests every rod for pull‑out force using a tensile test machine. The ball detent spring is tested for consistent release force. Each rod is 100% magnetic particle inspected for surface cracks.
To replace a worn or bent locking rod, park the grader and release hydraulic pressure. Remove the cotter pin from the clevis pivot and slide out the old rod.
Inspect the mating bracket and pin hole for elongation. Clean any debris from the detent bore. Insert the new 381600373 rod and secure with a new clevis pin and cotter pin.
Pull the T‑handle and rotate it into the locked position. Verify the ball detent clicks and the rod cannot be pulled out by hand. Lubricate the sliding surfaces with grease.
Bent or twisted rod, loose fit in the bracket (excessive play), missing or weak detent spring (rod disengages under vibration), and visible corrosion pitting on the locking pin.
If the rod fails to lock positively or releases spontaneously, replace immediately with genuine XCMG 381600373 to avoid machine damage or operator injury.
Inspect the locking rod during every daily walk‑around. Check for bent rod, loose handle, or inability to lock. Lubricate the sliding surfaces every 250 hours.
Replace the rod every 4,000‑5,000 hours or at the first sign of detent wear. A failed locking rod can cause the circle to shift, damaging hydraulic hoses and brackets.
Keep a spare 381600373 rod in your parts inventory – it is an inexpensive component that prevents expensive unplanned downtime and repair bills.
Genuine XCMG 381600373 locking rods are backed by a 12‑month warranty. Regional warehouses in Houston, Rotterdam, Dubai, and Shanghai maintain deep stock for rapid dispatch.
Air freight delivery within 3‑7 business days worldwide. Emergency 24‑48 hour shipping available. Bulk orders (10+ rods) receive volume discounts and sea freight options.
Aftermarket rods often use mild steel that bends easily, lack proper heat treatment, or have poorly machined detents that fail to lock. Genuine XCMG 381600373 ensures correct hardness, consistent spring force, and precise fit. Order genuine today to keep your grader’s locks positive and reliable.
Don’t risk a drifting circle or unintended articulation. The 381600373 locking rod is critical for safe and accurate grading. Replace worn or damaged rods proactively and keep a spare on hand. Your operator’s confidence and machine stability depend on it.
Upgrade your motor grader’s locking reliability with XCMG genuine rods. Forged, induction‑hardened, and 100% tested – order the 381600373 Locking Rod now and experience positive, vibration‑proof engagement for thousands of operating hours.
