Aftermarket EGM-50TH Automatic Grease Pump
This page describes an aftermarket automatic grease pump that cross-references the LUBE EGM-50TH. LUBE is a trademark of its respective owner. This is an aftermarket pump, not manufactured, sponsored, or endorsed by LUBE. EGM-50TH designations are for cross-reference identification only.
This compact automatic grease injection pump is intended for centralized lubrication on injection molding machines, CNC machine tools, and presses. Operation is normally controlled by a PLC or timer. The pump supports continuous energization with no stop-time restriction, making it suitable for cyclic lubrication sequences where the pump remains powered between discharge events.
Pressure and Output
The 10S series is rated at 10 MPa with a 36 W motor. The 20N series is rated at 20 MPa with a 50.4 W motor. Both versions provide a fixed discharge of 10 mL/min and accept DC 24 V plus or minus 10 percent. The discharge port is an Rc1/8 tapered thread.
| Parameter | 10S Series | 20N Series |
| Rated pressure | 10 MPa | 20 MPa |
| Motor power | 36 W | 50.4 W |
| Discharge | 10 mL/min fixed | 10 mL/min fixed |
| Voltage | DC 24 V plus or minus 10 percent | DC 24 V plus or minus 10 percent |
| Starting current | 3.0 A | 3.0 A |
| Rated current | 1.5 A | 1.5 A |
| Motor lock current | 4.4 A | 4.4 A |
| Discharge port | Rc1/8 tapered thread | Rc1/8 tapered thread |
Model Variants and Suffixes
Suffix codes identify the reservoir type, capacity, and optional control features. The 7C-LD adds a level switch. The 7C-LFBD adds a level switch, manual switch, and fault contact. Example decode: EGM-50TH-10S-7C-LFBD-D indicates a 10 MPa version with a 700 mL cartridge, level switch, manual switch, fault contact, and DIN terminal.
| Variant | Reservoir | Capacity | Options | Weight |
| 2C | Cartridge | 200 mL | Basic | 2.1 kg |
| 4C | Cartridge | 400 mL | Basic | 2.1 kg |
| 7C | Cartridge | 700 mL | Basic | 2.2 kg |
| 7C-LD | Cartridge | 700 mL | Level switch | 2.2 kg |
| 7C-LFBD | Cartridge | 700 mL | Level switch, manual switch, fault contact | 2.2 kg |
| 3P | Refillable tank | 260 mL | Basic | 2.2 kg |
| 8P | Refillable tank | 800 mL | Basic | 3.3 kg |
Grease Compatibility
Use a lithium-based grease with an NLGI grade of 00, 0, or 1. Molybdenum disulfide grease is prohibited because solid particles cause plunger wear and clogging. The standard connection is a DIN terminal. An optional signal DIN terminal is available for level switch, manual switch, and fault output wiring.
Installation Notes
Mount the pump inside the machine enclosure. The housing is made from flame-retardant resin. Before ordering, confirm whether the machine requires a cartridge or tank type and verify the exact suffix for level switch, manual switch, or fault contact options.
For multi-point lubrication layouts, see progressive lubrication systems.
What to Confirm Before Ordering
Confirm the 10S or 20N pressure rating from the existing pump nameplate. Confirm the reservoir suffix, including cartridge versus tank type and capacity. Confirm the control options such as level switch, manual switch, and fault contact. See grease pump and complete guide to grease pumps. If your nameplate code is unclear, contact the team with a photo of the label.
Frequently Asked Questions
What is the difference between the 10S and 20N versions?
The 10S version is rated at 10 MPa and uses a 36 W motor. The 20N version is rated at 20 MPa and uses a 50.4 W motor.
Is the 10 mL/min output fixed?
Yes, the discharge is fixed at 10 mL/min. It is not adjustable on this pump.
Which grease grades can I use?
Use lithium-based grease with NLGI grade 00, 0, or 1. Do not use higher grades.
Can I use molybdenum disulfide grease?
No, molybdenum disulfide grease is prohibited. Solid particles cause plunger wear and clogging.
Should I choose a cartridge or tank version?
Cartridge versions keep the reservoir sealed during replacement. Tank versions allow direct grease refilling.
What does the LFBD suffix include?
The LFBD suffix includes a level switch and a manual switch. It also includes a fault contact output.
Can this pump run continuously?
Yes, continuous energization is allowed. There is no stop-time restriction on this pump.
How is the pump wired?
The standard version uses a DIN terminal connection. An optional signal DIN terminal handles auxiliary contacts.
Which machines does this pump suit?
It suits injection molding machines and CNC machine tools. It also works on presses with centralized lubrication.
Who builds this pump, and how do I get a quotation?
IsoHiTech Lubrication Systems, founded in 2023, engineering since 2006, builds and supports every unit. Email inquiry@isohitech.com for specifications and a quotation.
Contact the team with your pump nameplate code.
