Ultra-High-Pressure Jet Grouting Pump
  • Ultra-High-Pressure Jet Grouting Pump
  • Ultra-High-Pressure Jet Grouting Pump
  • Ultra-High-Pressure Jet Grouting Pump
  • Ultra-High-Pressure Jet Grouting Pump
JN400

Ultra-High-Pressure Jet Grouting Pump

Grouting Pump
  • Max. pressure: 65 MPa
  • Max. flow: 475 L/min
Water Injection Pump
  • Max. pressure: 120 MPa
  • Max. flow: 1230 L/min
  • Drive mode: Electro-hydraulic (optional 4-pole/6-pole variable-frequency motor, and customizable diesel drive)
  • Weight: 15T
  • Dimensions: 5110×2700×2350 mm
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JN400 ultra-high-pressure grouting pump is a new-generation product developed based on over 20 years of manufacturing and on-site application experience in high-pressure grouting pumps. It represents an industry-leading solution, delivering a maximum working pressure of 65 MPa to meet the demands of highly complex geological conditions and projects with stringent engineering standards. The pump is particularly suitable for conveying abrasive slurries, significantly extending seal service life while reducing labor intensity.

Juneng offers a standard integrated configuration including the grouting pump, motor, base, and electrical control cabinet. Highly integrated pump room systems are also available, featuring real-time display, data storage, printing, and remote transmission of working pressure, flow rate, and slurry density.

  • Features
  • Applicable Fluid Media
  • Application Scenarios
  • Specifications
Features
  • Low SPM, long-stroke design:

    Low strokes per minute (SPM) operation ensures smoother slurry delivery and avoids excessive pulsation pressure fluctuations. The long piston stroke delivers higher discharge per stroke, allowing lower SPM under the same flow rate requirement and further reducing mechanical fatigue.

  • Innovative sealing system:

    Comprehensive upgrades to the valve assembly and plunger sealing structures significantly extend seal service life and reduce maintenance frequency.

Applicable Fluid Media
  • Cement slurry: Foundation reinforcement, curtain grouting, and crack filling
  • Water: High-pressure water cutting
  • Chemical slurry: Anti-seepage treatment treatment, leakage plugging, and chemical reinforcement
Application Scenarios

Ultra-high-pressure jet grouting pump is suitable for

  • Foundation treatment
  • Curtain grouting
  • Retaining cofferdams
  • Mine leakage plugging
  • Shaft lining protection
  • Slope anchoring
Specifications

Juneng offers pump products with multiple parameter configurations to meet diverse requirements, including pressure, flow rate, plunger size, site conditions, drive mode, and budget. Suitable configurations can be selected from the parameter tables below, or you may contact us directly for free professional configuration recommendations.

JN400 Ultra-High-Pressure Grouting Pump

4-pole variable-frequency motor, large pulley 1400 mm/small pulley 335 mm

Pump Speeds (min-1) 122 Plunger Stroke (mm) 150
Theoretical Flow (L/min) Motor Power for 4-Pole (kW) Plunger Dia. (mm)
200 220 250 280 315 335 375 400
Rated Pressure (MPa)
241 45 50 75 64 65 65 65 65 ø75
275 40 44 50 56 63 65 65 65 ø80
310 35 39 44 46 55 59 65 65 ø85
348 31 34 39 41 49 53 59 65 ø90
388 28 31 35 37 44 47 53 56 ø95
430 25 28 32 33 40 42 48 51 ø100
475 23 25 29 30 36 38 43 46 ø105

Note: Max. pressure is limited to 65 MPa.

JN400 Ultra-High-Pressure Grouting Pump

6-pole variable-frequency motor, large pulley 1400 mm/small pulley 335 mm

Pump Speeds (min-1) 81 Plunger Stroke (mm) 150
Theoretical Flow (L/min) Motor Power for 6-Pole (kW) Plunger Dia. (mm)
200 220 250 280 315 335 375 400
Rated Pressure (MPa)
160 65 65 65 65 65 65 65 65 ø75
183 60 65 65 65 65 65 65 65 ø80
206 53 58 65 65 65 65 65 65 ø85
231 42 52 59 65 65 65 65 65 ø90
258 38 46 53 59 65 65 65 65 ø95
286 34 42 48 53 60 64 65 65 ø100
315 31 38 43 48 55 58 65 65 ø105

Note: Max. pressure is limited to 65 MPa.

JN400 High-Pressure Water Injection Pump

4-pole variable-frequency motor, large pulley 1250 mm/small pulley 335 mm

Pump Speeds (min-1) 136 Plunger Stroke (mm) 150
Theoretical Flow Motor Power for 4-Pole (kW) Plunger Dia. (mm)
200 220 250 280 315 335 375 400
L/min m³/h Rated Pressure (MPa)
268 16 39 42 48 54 61 68 77 82 ø75
306 18.4 34 37 42 47 53 60 67 72 ø80
345 20.7 30 33 38 42 47 53 60 63 ø85
388 23.2 27 30 33 37.5 42 47 53 56 ø90
432 26 24 26 30 34 38 42 47 51 ø95
480 28.8 22 24 27 30 34 38 43 46 ø100
530 32 20 22 24 27 31 34 39 42 ø105
581 35 18 20 22 25 25 31 35 38 ø110
635 38 16 18 20 23 26 29 32 34 ø115
691 41.5 15 16 19 21 24 26 30 32 ø120
750 45 14 15 17 19 22 24 27 29 ø125
811 48.7 13 14 16 18 20 22 25 27 ø130
875 52.5 12 13 15 16.6 19 21 23 25 ø135
941 56.5 11 12 14 15.5 17 19 22 23 ø140
1010 60.6 10 11.3 13 14.4 16 18 20 21 ø145
1080 65 10.6 12 13.5 15 17 19 20 ø150
1154 69.2 10 11 12.6 14 16 18 19 ø155
1230 73.8 10 12 13 15 16 18 ø160

Note: Max. pressure is limited to 65 MPa.

JN400 Ultra-High-Pressure Water Injection Pump

4-pole variable-frequency motor, large pulley 1250 mm/small pulley 400 mm

Pump Speeds (min-1) 163 Plunger Stroke (mm) 150
Theoretical Flow Motor Power for 4-Pole (kW) Plunger Dia. (mm)
250 280 315 355 400
L/min m³/h Rated Pressure (MPa)
171 10.4 75 83 94 106 120 ø55
207 12.4 63 70 79 89 100 ø60
243 14.6 53 60 67 76 85 ø65
282 16.9 46 51 58 65 74 ø70

Note: JN400 high-pressure grouting pumps with working pressure below 10 MPa are no longer listed.