Frequently Asked Questions About IsoHiTech

Email or submit a quote request with:

• Machine type — excavator, press, conveyor, wind turbine, etc.
• Lubrication point count — list bearings, pins, slides, or send a schematic
• Preferred architecture — progressive (PRG), PDI injectors, single-line, or dual-line
• Power supply — voltage for electric pumps, or shop air for pneumatic units
• Lubricant — grease NLGI grade or oil ISO VG viscosity
• Destination country — for freight and voltage confirmation

Application engineers return a BOM with pump, distributors or injectors, tubing, fittings, and controller options. After you confirm the list, we quote air freight or sea freight. Request a quote.

Send photos of existing lube points, legacy part numbers, required cycle interval, ambient temperature range, and whether the host already has a progressive cycle monitor or PLC input. For retrofit jobs, note hose length limits and available mounting space on the frame.

T/T (wire transfer), Western Union, and L/C (letter of credit) are accepted for international orders. Payment terms and currency are confirmed on the proforma invoice. Partial deposit plus balance before shipment is common for first-time OEM customers.

Yes—free samples are available for qualified evaluation of pumps, progressive blocks, injectors, or valves. Contact us with part numbers, quantity, and destination. Sample freight may be charged to the buyer depending on region and weight.

A central lubrication system connects multiple friction points to one pump and reservoir through pipes or hoses. A timer or machine controller cycles the pump so each bearing, pin, or slide receives metered grease or oil on schedule—reducing manual greasing, evening out dose, and extending component life.

Common types:

• Progressive (PRG) — sequential blocks such as DJF2000 / DJF2500; one blocked point stops the chain
• PDI injectors — each injector fires when line pressure rises; see positive injector systems
• Dual-line — alternating Line A/B for large mining and steel plants
• Single-line resistance — simple oil way systems for machine tools

Overview: automatic lubrication · lubrication pump hub.

We ship by DHL, UPS, EMS, FedEx, air freight, or sea depending on weight, urgency, and destination. Small parts and samples often go express; full system skids and drum pumps typically ship air or sea palletized. Tracking is provided when the carrier supports it. Commercial invoice and packing list accompany export shipments.

Yes. Standard products include dimension sheets; custom BOMs may include schematic layouts for pump mounting, progressive stack location, and main line routing. Field commissioning support is available through lubrication service.

IsoHiTech is a manufacturer founded in 2023 on two decades of lubrication engineering experience, specializing in grease pumps, oil pumps, progressive blocks, injectors, reversing valves, and fittings. We design and assemble lubrication stations for OEM and aftermarket customers. See about us and why choose IsoHiTech.

Standard catalog lines are often in stock; dispatch is typically within two weeks after order confirmation and payment. Custom OEM builds, large dual-line skids, or non-standard voltage motors may need 4–8 weeks—lead time is stated on the quotation. Rush air shipment is available when stock permits.

Catalog spare parts and single pumps can often ship at MOQ 1. OEM program pricing may apply to production quantities. Trial orders are welcome before scaling to line-fit BOM volumes.

Yes. We accept small trial orders so you can verify quality, fit, and packaging before scaling to production BOM quantities. Many machine builders start with one host prototype kit.

Application engineers provide 7×12 hour response on technical inquiries—factory-direct support for BOM cross-reference, legacy part substitution, and troubleshooting. Include photos and part markings when asking for identification help.

We offer OEM private label and ODM co-design of pumps, reservoirs, divider assemblies, and complete skids. Send your host layout, branding requirements, or legacy part numbers for engineering review, 3D confirmation, and sampling. Voltage, language on labels, and connector standards can be adapted for export markets.

Often yes—for progressive blocks, injectors, and pumps where interface dimensions and logic match. Send the competitor model and photo of the nameplate; engineering confirms fit before you order replacement slices or full assemblies.

12 months from shipment against manufacturing defects under normal use and correct installation. Misapplication (wrong lubricant, blocked lines left running, or improper voltage) is excluded. Warranty terms are on the invoice or sales contract.

During the warranty period, confirmed defective IsoHiTech parts are replaced per policy. For out-of-warranty maintenance we supply pump elements, divider slices, injectors, check valves, and Viton/NBR seal kits by model and part number—see lubrication service. Keep the original BOM or order number for fastest matching.

Email photos or video of the fault, serial or batch marking on the part, installation date, and lubricant type used. Application engineering confirms whether the failure is covered before shipping replacement goods.

Yes. Progressive slices, pump elements, and injectors are stocked for common DJF, FS, and injector families. Express shipment is available for downtime-critical jobs.

It depends on machine size and attachment count. Standard kits often cover 20–50 points on trailers, excavator chassis, and boom layouts. Send a point list or schematic for a matched progressive or dual-line BOM. For dose planning use the bearing lubrication calculator.

Grease (NLGI #000–#2) suits slow-speed bearings, pins, and open gears—use grease pumps and progressive or dual-line blocks. Oil (ISO VG 32–220) suits high-speed spindles and way lubrication—use oil pumps and resistance or circulation dividers. Do not run oil through grease-rated pumps or vice versa.

After installation, pump element change, or long shutdown:

1. Fill the reservoir with clean, specified grease—no water or mixed grades.
2. Run the electric or pneumatic pump at slow cycle with the main line connected.
3. Bleed at the highest point or furthest outlet until grease flows without bubbles.
4. On progressive chains, open branches one at a time from pump toward the last block.
5. Verify the cycle indicator pin completes full travel (progressive) or each injector fires (PDI).

Manual barrel pumps can prime short lines where electric pumps cannot reach. For pump selection see the grease pump hub.

Follow the host OEM recommendation. Most centralized systems use NLGI #1 or #2 lithium or calcium grease. Very cold climates may need NLGI #0 or #00. Confirm pumpability at minimum ambient temperature—thick grease in long Φ6 mm lines may need shorter runs or a lower NLGI grade.

Yes. Send point count, stroke interval, lubricant grade, and voltage. Engineers select pump displacement, progressive stack size codes, injector types, and tubing length limits. Large projects may include on-site or remote commissioning through lubrication service.

IsoHiTech supplies four main types of automatic lubrication systems: single-line progressive systems, dual-line systems, single-line injector (PDI) systems, and oil mist (oil-air) systems. Progressive systems are the standard choice for small-to-medium machines—typically up to about 300 lubrication points—while dual-line systems serve very large plants.

In a progressive layout, divider-block pistons fire in strict sequence, so the whole chain can be monitored from one cycle indicator. Dual-line designs alternate pressure between two main lines and keep working even if one outlet blocks. PDI injectors fire in parallel with individually adjustable doses, and oil mist suits high-speed bearings and chains. See the progressive lubrication systems and dual-line lubrication systems pages for layouts and components.

A progressive system meters lubricant through one supply line using divider blocks whose pistons move in strict sequence—if one point blocks, the whole chain stalls, which makes single-point monitoring easy. A dual-line system alternates pressure between two main lines, and each metering valve operates independently, so one blocked outlet does not affect the others.

Choose progressive for compact machines up to roughly 300 points and moderate line lengths. Choose dual-line for steel mills, cement plants, and paper mills: IsoHiTech dual-line systems can supply up to 2,000 points over main-line runs of 120 m or more per side, at working pressures up to 400 bar. A fuller comparison is in the dual-line systems guide and the article on progressive vs single-line distribution.

Most IsoHiTech systems handle grease from NLGI #000 to #2 and lubricating oils of ISO VG 68 and above, at ambient temperatures from -20°C to +60°C. That range covers the great majority of industrial and mobile-equipment applications, from compact progressive kits on vehicles to large dual-line plant headers.

Grade selection follows climate and line length: NLGI #1 extreme-pressure lithium grease is typical for summer service, NLGI #0 for winter, and special low-temperature synthetic formulations below -20°C. Stiffer NLGI #3 grease is only used in specific dual-line metering blocks, not in progressive systems. See our grease range and the guide to choosing grease based on climate.

Published results vary by plant, but automatic lubrication typically eliminates almost all manual greasing labor, significantly reduces bearing failures, and extends component life—most installations pay for themselves within one to two years. Savings come from four areas: labor, avoided bearing replacements, less unplanned downtime, and lower lubricant consumption.

The exact figure depends on machine count, operating environment, and how disciplined the previous manual routine was; dusty, high-vibration duty such as mining sees the largest gains. Because every missed greasing interval accelerates wear, the biggest driver is consistency rather than the grease itself. For system options, see centralized lubrication systems and the automatic lubrication systems guide.

Yes. IsoHiTech designs complete custom lubrication systems around your machine. Share the equipment drawing, the number and type of lubrication points, the grease or oil specification, and the operating environment, and our engineers will select the pump, metering blocks, tubing, and monitoring devices and return a layout with a bill of materials.

Custom work covers system architecture (progressive, dual-line, or injector), special voltages, reservoir sizes, and OEM/ODM branding. Point maps and photos of the installation area speed up the process. See the automatic lubrication systems guide and our general FAQs for the information that accelerates a quotation.

IsoHiTech automatic lubrication systems are used in mining and construction equipment, steel and cement plants, wind turbines, ports and harbor cranes, machine tools, and food and beverage processing—essentially any industry where bearings, chains, gears, or slides need regular, metered lubrication.

Mobile fleets such as excavators, wheel loaders, and haul trucks typically use compact progressive kits, while stationary plants—steel mills, cement lines, paper machines—run high-pressure dual-line headers. Wind turbines and food processing lines use progressive systems with application-specific lubricants. Background reading: the automatic lubrication systems guide and what is a central lubrication system.

It depends on the series: the DJF1000 is rated to 16 MPa with 0.08–0.48 ml/cycle per outlet, the DJF2000 to 25 MPa with 0.16–1.12 ml/cycle, and the DJF3000 to 25 MPa with 0.4–4.8 ml/cycle. All three accept NLGI #000–#2 grease or oil of ISO VG 68 and above.

Match pump, hose, and fittings to the same pressure class as the block, and remember that progressive outlets must never be plugged—blocking a port overpressurizes the stack and stalls the chain. Full dimension tables, slice counts, and size codes are on the DJF1000 and DJF3000 product pages.

NLGI #2 is a grease consistency grade defined by the National Lubricating Grease Institute: a worked cone penetration of 265–295 tenths of a millimeter at 25°C per ASTM D217. It has a soft, peanut-butter-like consistency and is the most widely used multi-purpose bearing grease in the world.

The grade says nothing about base oil or thickener type—NLGI #2 greases exist in lithium, lithium-complex, calcium-sulfonate, and polyurea formulations, so always check the full specification, not just the number. NLGI #2 suits most moderate-temperature bearings and centralized systems with short line runs. See our grease range and the climate-based grease selection guide.

NLGI #1 grease is softer (worked penetration 310–340) and flows more easily through long pipes and at low temperatures; NLGI #2 is stiffer (265–295) and stays in place better inside the bearing. Use NLGI #1 for centralized systems with long line runs or cold starts, and NLGI #2 for manual greasing or short progressive circuits in moderate climates.

Below about -20°C, even NLGI #1 may be too stiff—switch to a low-temperature synthetic formulation. Mixing grades in one system is acceptable only if the thickener types are compatible. More detail in the guide to choosing grease based on climate and the grease overview.

Yes. Greases built on synthetic base oils—typically PAO or ester—with lithium-complex or polyurea thickeners routinely operate from about -40°C up to +150°C, and some lithium-complex synthetics are rated to +180°C. They also oxidize more slowly than mineral-oil greases, which extends relubrication intervals.

Synthetics cost more per kilogram but earn it back in extreme cold, high-temperature bearings, and hard-to-access points such as wind turbine yaw and pitch bearings. Confirm compatibility with seals and with any grease already in the system before switching. See the grease section and the climate selection guide.

Grease fittings go by several names: “grease fitting” is the generic term, “grease nipple” is common in British English, “Zerk” honors inventor Oscar U. Zerk, whose design was patented in January 1929, and “Alemite fitting” comes from the Alemite Manufacturing Corporation, the patent’s assignee, which had sold ball-check grease fittings since 1919.

All four names usually refer to the same spring-loaded ball-check nipple that accepts a standard grease gun coupler; regional usage differs—”nipple” in the UK and Commonwealth, “zerk” in North America. For thread forms and head styles, see our grease fitting types guide and the auto greaser fittings range.

No. Grease fittings come in several thread standards, and mixing them up will strip the port. The most common are 1/4″-28 UNF (SAE, standard on much North American equipment), 1/8″ NPT tapered pipe thread (heavy construction and agricultural machinery), and metric M6×1.0, M8×1.0 or M8×1.25, and M10×1.0 or M10×1.5 on European and Asian machines.

Head style varies too—straight, 45°, and 90° elbows, plus button-head and flush types for confined or high-volume points. Measure the existing thread or check the equipment manual before ordering replacements. See the grease fitting types guide and our notes on choosing fittings for construction and mining equipment.

In modern usage there is no difference: “Alemite fitting” and “Zerk fitting” both describe the same spring-loaded ball-check grease nipple used with a standard grease gun coupler. The names are historical—Alemite sold ball-check fittings from 1919, and Oscar Zerk’s improved 1929 design was assigned to the Alemite company.

One caution: on vintage machinery, “Alemite” can refer to older pin-type or button-head fittings that do not accept a modern coupler, so check the head style before assuming compatibility. Current-production fittings sold under either name share the same dimensions. See auto greaser fittings and the grease fitting types guide.

A fitting that refuses grease is usually blocked by hardened grease—either inside the fitting itself or in the channel behind it. Work through the checks in order: clean, apply higher pressure, warm gently, then remove and test or replace the fitting.

• Clean the head and pick out old grease—a coupler cannot seal on a dirty nipple.
• Use a hand lever gun, not a cordless one—higher peak pressure, and you can feel the blockage.
• Warm the joint gently (no open flame near seals) and pump again.
• Unscrew the fitting and test it off the machine; if it flows, flush the bearing channel through the open port.
• Replace any fitting with a stuck ball check; they are inexpensive wear parts.

If several fittings on one machine refuse grease, suspect water ingress or grease incompatibility in the lines. See auto greaser fittings and our general FAQs.

Air-operated double-diaphragm (AODD) pumps can run dry indefinitely without damage: the diaphragms are driven by compressed air, and there are no internal seals, bearings, or impellers that rely on the pumped fluid for lubrication or cooling. This makes them tolerant of empty tanks and interrupted supply.

Two caveats: dry running still consumes compressed air while delivering nothing, so fit a low-level shutoff where practical; and this tolerance applies to air-operated designs—electric-motor diaphragm and piston pumps have their own limits, so check the specific model’s manual. See the diaphragm pump range and understanding diaphragm pumps.