• KBB & KBV Reciprocating Gas Compressors

    Ariel's largest compressor frames, the KBB and KBV are rated up to 10,000 bhp7,460 kW. Each compressor features a modern, durable design with a strengthened internal structure. This family of frames is recommended for use in pipeline transmission and high-pressure injection applications.

    Size Comparison
     

  • Product Features

  • Slider_Aux_End_ZUBV_300_260

    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.

    Slider_Bolting_Grade8_300_260

    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.

    Slider_Conrod_ZUBV_300_260

    Rigid Connecting Rods

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

       
      Slider_Crosshead_ZU_300_260

      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.

       

      Slider_cylinder_300_260

      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.

       
      Slider_piston_rod_300_260

      Durable Pistons and Rods

      KBB/KBV 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.

      Slider_Bearings_ZUBV_300_260

      Precision Bearing Shells

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

       
      Slider_VVCP_300_260

      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.
       
      Slider_Valve_CDZUBV_300_260

      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.

       

      Slider_crankshaft_300_260

      Heavy-Duty Crankshafts

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

       
      Slider_filter_canister_ZUBV_300_260

      High-Efficiency Canister Type Oil Filters

      Ariel KBB/KBV compressors feature high-efficiency canister filters rated at 1 micron nominal and 12 micron absolute.

       

      Slider_Frame_ALL_Frames_300_260

      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.

    • 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.



       

      High-Strength Bolting

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



      Rigid Connecting Rods

      This compressor features durable connecting rods manufactured from forged steel with a 4-bolt heavy-duty "I" section.



       

      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.



       

      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.



      Durable Pistons and Rods

      This compressors features 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.



      Precision Bearing Shells

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



       

      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.



      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.



      Heavy-Duty Crankshafts

      Ariel manufactured crankshafts are precision-machined one-piece forged steel with integral counter-weights, balanced for smooth operation.



      High-Efficiency Spin-On Oil Filters

      This compressor features high-efficiency canister filters rated at 1 micron nominal and 12 micron absolute.



       

      Rugged Crankcase

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




    • Specifications

    • Frame KBB KBV
      KBB/4 KBB/6 KBV/4 KBV/6
      Number of Throws 4 6 4 6
      Rated Power (BHP) 6,668 10,000 6,668 10,000
      Stroke (inch) 7.25 8.50
      Maximum RPM 900 750
      Piston Speed (FPM) 1,088 1,063
      Total Road Load (lbs) 190,000
      Tension (lbs) 95,000
      Compression (lbs) 100,000
      Average Weight without Cylinders (lbs) 36,800 52,500 36,900 52,700
      Maximum Length (inch) 144 188 144 188
      Nominal Width (inch) 228
      Crankshaft Centerline, from bottom (inch) 27
      Frame KBB KBV
      KBB/4 KBB/6 KBV/4 KBV/6
      Number of Throws 4 6 4 6
      Rated Power (kW) 4,972 7,458 4,972 7,458
      Stroke (mm) 184 216
      Maximum RPM 900 750
      Piston Speed (m/s) 5.53 5.40
      Total Road Load (N) 845,162
      Tension (N) 422,581
      Compression (N) 444,822
      Average Weight without Cylinders (kg) 16,692 23,813 16,738 23,904
      Maximum Length (mm) 3,658 4,775 3,658 4,775
      Nominal Width (mm) 5,791
      Crankshaft Centerline, from bottom (mm) 686
       
      KBV
      KBB
      Number of Throws
      4 | 6
      4 | 6
      Stroke
      8.50 in
      7.25 in
      216 mm
      184 mm
      Rated RPM
      750
      900
      Rated Power/Throw
      1,667 BHP
      1,243 kW

      Internal Gas Rod Loads

      Compression
      100,000 lbf
      444.8 kN
      Tension
      95,000 lbf
      422.6 kN
      Total
      190,000 lbf
      845.2 kN

      Miscellaneous

      Rod Diameter
      3.125 in
      79 mm
      Crankshaft Centerline
      23.000 in
      584 mm
      Main Diameter
      9.125 in
      232 mm
      Guide Design
      Separable

      Material

      Crankshaft
      Forged Steel
      Connecting Rod
      Forged Steel
      Crosshead
      Ductile Iron
      Crosshead Bushing
      Bronze

    • Materials

    • Crankcase
      Crankcase

      Crankcase

      Crosshead
      Crosshead

      Crosshead

      Connecting Rod
      Connecting Rod

      Connecting Rod

    • Part Material
      Crankcase Gray Iron
      Crosshead Ductile Iron
      Crankshaft Forged Steel
      Connecting Rod Forged Steel
      Main Bearing Tri-Metal
      Thrust Bearing Bronze
      Connecting Rod Bearing Tri-Metal
      Crosshead Guide Gray Iron
      Crosshead Pin Alloy Steel
      Crosshead Pin Bushing Bronze
      Stress Bolts, Standard Grade 8

    • Cylinders

      Cylinders

      •  
       

      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
      Double-Acting 5-3/4B:V-VS 5.250; 5.500; 5.750 6,000 Forged Alloy Steel
      Double-Acting 5-3/4B:V-TR-VS 5.250; 5.500; 5.750 6,700 Forged Alloy Steel
      Double-Acting 6-3/4B:V-VS 6.250, 6.500, 6.750 4,780 Forged Alloy Steel
      Double-Acting 6-3/4B:V-TR-VS 6.250; 6.500; 6.750 6,700 Forged Alloy Steel
      Double-Acting 7-3/4B:V-VS 7.250; 7.500; 7.750 3,755 Forged Alloy Steel
      Double-Acting 9B:V 8.375; 8.625; 9.000 2,515 Ductile Iron
      Double-Acting 10-1/2B:V 9.750; 10.125; 10.500 2,095 Ductile Iron
      Double-Acting 12-1/4B:V 11.375; 11.750; 12.250 1,900 Ductile Iron
      Double-Acting 14-1/8B:V 13.250; 13.625; 14.125 1,065 Ductile Iron
      Double-Acting 16-3/8B:V 15.375; 15.750; 16.375 830 Ductile Iron
      Double-Acting 18-7/8B:V 17.750; 18.125; 18.875 620 Ductile Iron
      Double-Acting 21-3/4B:V 20.500; 20.875; 21.750 460 Ductile Iron
      Double-Acting 24-1/2B:V 23.625; 24.500 365 Ductile Iron
      Double-Acting 27-5/8B:V 26.625; 27.625 285 Ductile Iron
      Double-Acting 31-1/8B:V 30.000; 31.125 220 Ductile Iron
      Double-Acting 12BL:VL 11.250; 11.625; 12.000 1,900 Ductile Iron
      Double-Acting 13-3/4BL:VL 13.250; 13.750 1,690 Ductile Iron
      Double-Acting 15-1/4BL:VL 14.375; 14.750; 15.250 1,600 Ductile Iron
      Double-Acting 17BL:VL 16.125; 16.500; 17.000 1,270 Ductile Iron
      Double-Acting 19BL:VL 18.000; 18.375; 19.000 1,030 Ductile Iron
      Double-Acting 12BM:VM 11.250; 11.625; 12.000 1,900 Ductile Iron
      Double-Acting 13-3/4BM:VM 13.250; 13.750 1,690 Ductile Iron
      Double-Acting 15-1/4BM:VM 14.375; 14.750; 15.250 1,600 Ductile Iron
      Double-Acting 17BM:VM 16.125; 16.500; 17.000 1,270 Ductile Iron
      Double-Acting 19BM:VM 18.000; 18.375; 19.000 1,030 Ductile Iron
      Bore
       
      Pressure
       
      Operation Class BORE (mm) MAWP (bar) Material
      Double-Acting 5-3/4B:V-VS 133; 140; 146 414 Forged Alloy Steel
      Double-Acting 5-3/4B:V-TR-VS 133; 140; 146 462 Forged Alloy Steel
      Double-Acting 6-3/4B:V-VS 159; 165; 171 330 Forged Alloy Steel
      Double-Acting 6-3/4B:V-TR-VS 159; 165; 171 462 Forged Alloy Steel
      Double-Acting 7-3/4B:V-VS 184; 191; 197 259 Forged Alloy Steel
      Double-Acting 9B:V 213; 219; 229 173 Ductile Iron
      Double-Acting 10-1/2B:V 248; 257; 267 144 Ductile Iron
      Double-Acting 12-1/4B:V 289; 298; 311 131 Ductile Iron
      Double-Acting 14-1/8B:V 337; 346; 359 73 Ductile Iron
      Double-Acting 16-3/8B:V 391; 400; 416 57 Ductile Iron
      Double-Acting 18-7/8B:V 451; 460; 479 43 Ductile Iron
      Double-Acting 21-3/4B:V 521; 530; 552 32 Ductile Iron
      Double-Acting 24-1/2B:V 600; 622 25 Ductile Iron
      Double-Acting 27-5/8B:V 676; 702 20 Ductile Iron
      Double-Acting 31-1/8B:V 762; 791 15 Ductile Iron
      Double-Acting 12BL:VL 286; 295; 305 131 Ductile Iron
      Double-Acting 13-3/4BL:VL 337; 349 117 Ductile Iron
      Double-Acting 15-1/4BL:VL 365; 375; 387 110 Ductile Iron
      Double-Acting 17BL:VL 410; 419; 432 88 Ductile Iron
      Double-Acting 19BL:VL 457; 467; 483 71 Ductile Iron
      Double-Acting 12BM:VM 286; 295; 305 131 Ductile Iron
      Double-Acting 13-3/4BM:VM 337; 349 117 Ductile Iron
      Double-Acting 15-1/4BM:VM 365; 375; 387 110 Ductile Iron
      Double-Acting 17BM:VM 410; 419; 432 88 Ductile Iron
      Double-Acting 19BM:VM 457; 467; 483 71 Ductile Iron

    • Parts

      Ariel original equipment 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.

      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.

      Find A Distributor


    • Support

      Ariel is committed to supporting our compressors for life. We pride ourselves on the manufacturing practices and engineering support behind our world class compression technologies. Through unmatched customer service and a global distribution network, Ariel will provide you with best-in-class compression solutions that reduce downtime and improve application performance.