• JGR

    The JGR is a medium-sized separable reciprocating compressor. Well suited for gas gathering on moderate size wells, the JGR is packager-friendly, pairing easily with electric motors and natural gas engines.

    Size Comparison
     

  • Product Features

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    Full-Pressure Lubrication

    A frame-driven lube oil pump provides cooled oil through a full-flow oil filter to all moving parts in the frame. A divider-block system supplies metered oil to cylinder bores and rod packings.

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    High-Strength Bolting

    Durable Grade 8 bolting on all loaded joints combined with specially designed fatigue-fighting bolts on all valve caps ensure ultimate holding strength.

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    Rigid Connecting Rods

    The JGR compressors feature durable connecting rods manufactured from forged steel with a 4-bolt heavy-duty "I" section.

       
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      Rugged Crossheads

      One-piece, long-life crossheads with hardened, ground steel crosshead pins and direct, full-pressure lubrication at the top and bottom for minimum wear.

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      Innovative Cylinders

      Ariel's horizontal and double-acting cylinders eliminate the cost of a cylinder cooling system and remove the maintenance problems associated with water cooling.

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      Durable Pistons and Rods

      JGR compressors feature wear-resistant ductile or gray iron pistons, and precision-ground alloy steel piston rods with locking crosshead nuts. Rolled threads are 1/4" under rod diameter for easy installation.

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      Precision Bearing Shells

      Every Ariel compressor features precision-machined, compact, tri-metal main and connecting rod bearings.

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      Versatile Unloading Devices

      Ariel offers manual, head-end, variable volume clearance pockets on most cylinders. Pneumatic suction valve un-loaders are available on a limited basis.

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      Efficient Valving

      Plate-type valves are designed for modern speeds, utilizing non-metallic sealing elements as standard. Valves are selected to comply with established low-valve velocity standards.

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      Heavy-Duty Crankshafts

      The JGR compressors feature forged steel, precision-machined crankshafts with integral counter-weights manufactured by Ariel Corporation.

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      High-Efficiency Spin-On Oil Filters

      Ariel JGR compressors feature high-efficiency spin-on oil filters rated at 5 micron nominal and 17 micron absolute.

       

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      Rugged Crankcase

      Ariel crankcases are designed for long service life and ease of access during maintenance. Our crankcases feature a heavily-ribbed, high-strength, cast iron base with a removable, lightweight aluminum top cover.


    • Specifications

    • Frame JGR/2 JGR/4
      Number of Throws 2 4
      Rated Power (BHP) 430 860
      Stroke (inch) 4.25
      Maximum RPM 1,200
      Piston Speed (FPM) 850
      Total Rod Load (lbs) 32,000
      Tension (lbs) 16,000
      Compression (lbs) 20,000
      Average Weight without Cylinders (lbs) 1,700 3,400
      Maximum Length (inch) 41 78
      Nominal Width (inch) 104
      Crankshaft Centerline, from bottom (inch) 12
      Frame JGR/2 JGR/4
      Number of Throws 2 4
      Rated Power (kW) 321 641
      Stroke (mm) 108
      Maximum RPM 1,200
      Piston Speed (m/s) 4.32
      Total Rod Load (N) 142,343
      Tension (N) 71,172
      Compression (N) 88,964
      Average Weight without Cylinders (kg) 771 1,542
      Maximum Length (mm) 1,041 1,981
      Nominal Width (mm) 2,642
      Crankshaft Centerline, from bottom (mm) 304.8

    • Materials

    • Small Frame Montage
      Crankcase

      Crankcase

      Small Frame Crosshead
      Crosshead

      Crosshead

      Small Frame ConRod
      Connecting Rod

      Connecting Rod


    • Cylinders

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      Innovative Cylinders

      The proven design of the Ariel cylinder eliminates the cost of a cylinder cooling system and removes the complexity and maintenance problems associated with water cooling, such as scaling and corrosion.

      • Horizontal single or double-acting, ion-nitrided, non-cooled compressor cylinders
      • Plugged indicator connections on the head end and crank end
      • SAE series 4100 steel piston rods, ion-nitrided with rolled threads
      • Pistons of wear-resistant gray iron or ductile iron
      • Non-metallic piston and rider rings
      • Full floating, vented rod and wiper packings
      • Non-metallic plates in suction and discharge valves
       
    • Drag sliders to narrow cylinder choices

      Bore
       
      Pressure
       
      Operation Class Bore (inch) MAWP (psig) Material
      *HE=Head End, CE=Crank End
      Double-Acting 3-3/8RJ-FS 3.125; 3.250; 3.375 4,500 Forged Alloy Steel
      Double-Acting 3-7/8RJ:R 3.625; 3.875 2,200 Ductile Iron
      Double-Acting 4-5/8R 4.250; 4.625 1,900 Ductile Iron
      Double-Acting 4-5/8HJ 4.250; 4.625 2,600 Ductile Iron
      Double-Acting 5-1/2RJ:R 5.125; 5.500 1,725 Ductile Iron
      Double-Acting 6-3/8RJ:R 6.000; 6.375 1,270 Ductile Iron
      Double-Acting 7-3/8RJ:R 7.000; 7.375 845 Ductile Iron
      Double-Acting 7-3/8RJ 7.000; 7.375 1,135 Ductile Iron
      Double-Acting 8-3/8RJ:R 8.000; 8.375 635 Ductile Iron
      Double-Acting 8-3/8RJ 8.000; 8.375 800 Ductile Iron
      Double-Acting 9-3/4RJ:R 9.250; 9.750 635 Ductile Iron
      Double-Acting 10-3/8RJ:R 10.375 470 Ductile Iron
      Double-Acting 11-1/2R 11.000; 11.500 400 Ductile Iron
      Double-Acting 11-1/2RJ 11.000; 11.500 500 Ductile Iron
      Double-Acting 13-1/2RJ:R 13.000; 13.500 300 Ductile Iron
      Double-Acting 15-3/4RJ:R 15.250; 15.750 200 Ductile Iron
      Double-Acting 17-1/4RJ:R 16.750; 17.250 230 Ductile Iron
      Double-Acting 19-1/2RJ:R 19.000; 19.500 200 Ductile Iron
      Tandem 2RJ:R-FS-HE 1.750; 2.000 5,280 Forged Alloy Steel
      Tandem 2RJ:R-FS-HE 1.750; 2.000 6,100 Forged Alloy Steel
      Tandem 3-7/8RJ:R-CE 3.625; 3.875 2,200 Ductile Iron
      Tandem 3-7/8RJ:R-HE 3.625; 3.875 2,200 Ductile Iron
      Tandem 6-3/8RJ:R-CE 6.000; 6.375 1,270 Ductile Iron
      Tandem 7-3/8RJ:R-CE 7.000; 7.375 845 Ductile Iron
      Tandem 4-5/8R-HE 4.250; 4.625 1,900 Ductile Iron
      Tandem 8-3/8R-CE 8.000; 8.375 635 Ductile Iron
      Tandem 5-1/2RJ:R-HE 5.125; 5.500 1,800 Ductile Iron
      Tandem 9-3/4RJ:R-CE 9.250; 9.750 635 Ductile Iron
      Bore
       
      Pressure
       
      Operation Class Bore (mm) MAWP (bar) Material
      *HE=Head End, CE=Crank End
      Double-Acting 3-3/8RJ-FS 79; 83; 86 310 Forged Alloy Steel
      Double-Acting 3-7/8RJ:R 92; 98 152 Ductile Iron
      Double-Acting 4-5/8R 108; 117 131 Ductile Iron
      Double-Acting 4-5/8HJ 108; 117 179 Ductile Iron
      Double-Acting 5-1/2RJ:R 130; 140 119 Ductile Iron
      Double-Acting 6-3/8RJ:R 152; 162 88 Ductile Iron
      Double-Acting 7-3/8RJ:R 178; 187 58 Ductile Iron
      Double-Acting 7-3/8RJ 178; 187 78 Ductile Iron
      Double-Acting 8-3/8RJ:R 203; 213 44 Ductile Iron
      Double-Acting 8-3/8RJ 203; 213 55 Ductile Iron
      Double-Acting 9-3/4RJ:R 235; 248 44 Ductile Iron
      Double-Acting 10-3/8RJ:R 264 32 Ductile Iron
      Double-Acting 11-1/2R 279; 292 28 Ductile Iron
      Double-Acting 11-1/2RJ 279; 292 34 Ductile Iron
      Double-Acting 13-1/2RJ:R 330; 343 21 Ductile Iron
      Double-Acting 15-3/4RJ:R 387; 400 14 Ductile Iron
      Double-Acting 17-1/4RJ:R 425; 438 16 Ductile Iron
      Double-Acting 19-1/2RJ:R 483; 495 14 Ductile Iron
      Tandem 2RJ:R-FS-HE 44; 51 364 Forged Alloy Steel
      Tandem 2RJ:R-FS-HE 44; 51 421 Forged Alloy Steel
      Tandem 3-7/8RJ:R-CE 92; 98 152 Ductile Iron
      Tandem 3-7/8RJ:R-HE 92; 98 152 Ductile Iron
      Tandem 6-3/8RJ:R-CE 152; 162 88 Ductile Iron
      Tandem 7-3/8RJ:R-CE 178; 187 58 Ductile Iron
      Tandem 4-5/8R-HE 108; 117 131 Ductile Iron
      Tandem 8-3/8R-CE 203; 213 44 Ductile Iron
      Tandem 5-1/2RJ:R-HE 130; 140 124 Ductile Iron
      Tandem 9-3/4RJ:R-CE 235; 248 44 Ductile Iron

    • Parts


    • Genuine Ariel Parts

      Ariel original equipment parts are designed, engineered, and manufactured specifically for your JG or JGAJGC or JGDJGE, JGK, or JGTJGJJGHJGM or JGPJGN or JGQJGRKBV or KBBKBZ or KBU compressor. Discover why Ariel's comprehensive parts program will maximize the life of your compressor.

      CLICK TO EXPLORE ARIEL PARTS

      Trusted Ariel Distributors

      Ariel OEM parts are marketed through a long-established network of qualified distributors who have unmatched expertise in the compression industry. Our distributors are available to help you select the best parts and services required to maintain the efficiency and dependability of your Ariel compressor.

      CLICK TO FIND A DISTRIBUTOR