DJF2000 Progressive Distributor Block

How DJF2000 Progressive Metering Works

Grease or oil enters the inlet section and advances pistons slice by slice through the stack. Each working slice discharges a fixed volume through its T (twin) or S (single) outlets only after upstream sections complete their stroke—this is progressive (series) logic, not parallel PDI firing. One full movement of the cycle indicator pin (or one pulse from a type 8 electric switch) confirms that every connected point on that stack received its dose for that pump run.

If one bearing line blocks, grease cannot pass and the chain stalls. Line pressure rises; the indicator stops; the host controller should alarm on missing cycle signal within the timeout window. That fail-safe behaviour is why machine-tool and harbor OEMs prefer progressive blocks over open header systems where a blocked point may go unnoticed.

Typical Plant Layout

1. Pump + controller — manual, FS motorized, or electric station from Related Products.
2. Fill filter — 150 μm recommended on grease fill; pair with grease filter in dusty plants.
3. Main line — typically Φ8 mm inlet tube (1.5–4.5 m) to the DJF2000 inlet section.
4. DJF2000 stack — inlet + 3–10 working slices + end section; cycle monitor on left or right face.
5. Branch lines — Φ6 mm outlet tube (1.2–3.5 m) to each bearing, slide, or pin.

When to Choose DJF2000 (Not 1000 or 3000)

• Need 25 MPa class—hot ambient, long tube runs, or NLGI #1–#2 that exceeds DJF1000 at 16 MPa.
• Dose per point falls in 0.16–1.12 ml/cycle—more than 1000-series capacity but less than heavy DJF3000 slices (0.4–4.8 ml/cyc).
• 3–20 outlets on one sequential header—machine tool way covers, harbor crane turrets, steel-mill auxiliaries.
• Operating band -20°C to +60°C with carbon steel manifold (standard DJF2000 body).

DJF2000 vs Other Metering Architectures

Not dual-line: DJF2000 is single-line progressive only. Do not mount on A/B reversing headers without full system redesign.

Sizing a DJF2000 Stack (5 Steps)

1. Point count & dose — list each bearing with ml/cycle from OEM chart (or bearing calculator for grease volume planning).
2. Size code — pick 10–35 and T vs S: twin slices feed two nearby points from one section; single feeds one side only.
3. Slice count — sum working slices (≤10) so total outlets ≥ point count; leave spare capacity only as unused S outlets with proper routing—not plugged ports.
4. Pressure & tube — confirm pump delivers 25 MPa at the farthest Φ6 mm outlet with your NLGI grade; shorten runs or upsize tube if cycle time is slow.
5. Monitor — specify mechanical pin 7L/7R or electric switch 8L/8R for PLC fault stop when pin motion stops.

Ordering Code Example

Example stack: DJF-2000 · 4 sections · indicator 8R (micro-switch, right) · sequence 35T, 15SR, 10T — crossport CF notation left/right per factory drawing. Send machine layout sketch for confirmed BOM and 32265-2 crossport kit if line crossover is required.

Installation & Commissioning

• Mount with slice T/S markings visible; torque inlet/outlet fittings to spec—do not block unused outlets.
• After first fill, bleed air at the highest outlet in the stack; verify one full pin stroke per pump cycle.
• Route tube through lubrication pipe and compression fittings; protect exposed runs with hose protection cover near heat or impact zones.
• Log size codes and stroke counts in CMMS—when a slice is replaced, match P/N (2000-xxT/S valve and 20720-xxT/S outlet) exactly.

Troubleshooting Quick Reference

Hub pages: progressive manifold · progressive systems · grease distributor block · metering unit.

Before you buy: read our guide to how distributor blocks work.