ARIEL KBZ & KBU Gas Compressor

prod_JGZ The KBZ and KBU are large, medium speed reciprocating separable compressors. Since the product family's introduction in 2002, they have proven to be one of the most cost effective methods of compression for pipeline transmission, power generation, refrigeration, processing, and all other applications requiring large horsepower drivers and compression capacity. Cylinders, specifically for pipeline transmission (ZL & UL) are available, as well as a full range of cylinders for all other applications.

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Features

Serviceability	Entire unit is designed for ease of repair. All components are readily accessible.
Standardization	Many components are interchangeable throughout the various lines.
Full Pressure Lubrication	A frame-driven lube oil pump provides pressurized, cooled oil through a full flow oil filter to all moving parts in the frame. A divider block distribution system supplies metered oil to cylinder bores and rod packing. Stainless steel tubing is used throughout the cylinder lubrication system.
Unloading Devices	Manual head-end variable volume clearance pockets, pneumatic fixed volume clearance pockets, and pneumatic suction valve unloaders are available on most cylinders.
Heavy Duty Crankshaft	Forged steel precision machined with integral counterweights.
Rugged Crankcase	Heavily ribbed (with spacer bars for stiffening), high-strength cast iron base with lightweight aluminum top cover and removable end covers for ease of access.
Precision Bearing Shells	Precision-machined, tri-metal main and connecting rod bearings.
Rugged Crossheads and Guides	Cast iron crosshead guides with external ribbing and removable side covers. One piece, long life crossheads with direct, full pressure lubrication at top and bottom for minimum wear. Hardened and ground steel crosshead pins.
Rigid Connecting Rods	Forged steel, four bolt, heavy duty "H" section.
Quiet Auxiliary Drive	Fully enclosed and continuously lubricated chain drive adjusted by positive positioning eccentric vernier.
Oil and Dust Seal	Foolproof, non-contacting crankshaft oil seal, plus reliable non-wearing dust seal.
Proven Cylinder Design	Non-cooled compressor cylinders with ample nozzles and large gas passages. Cylinder bodies are ion-nitride hardened and drilled for indicator ports.
High Strength Bolting	Grade 8 or 17-4PH bolting on all pressurized components. All bolting designed for accessibility.
Efficient Valving	Plate-type valves designed for modern speeds, utilizing non-metallic sealing elements as standard. Selected to adhere to established, low valve velocity standards.
Durable Pistons	Wear-resistant ductile or gray iron pistons, with wear bands.
Stout Piston Rods	Short, stiff, precision-ground alloy steel piston rods with locking crosshead nut. All piston rods are ion-nitrided for surface hardness and longevity. Rolled threads are 1/4" under rod diameter for easy installation through packing.

Frame Specifications

Frame	KBZ			KBU
Frame	KBZ/2	KBZ/4	KBZ/6	KBU/2	KBU/4	KBU/6
Number of throws	2	4	6	2	4	6
Rated Power, BHP	2600	5200	7800	2600	5200	7800
Rated Power, kW	1939	3878	5816	1939	3878	5816
Stroke, inches	6.75	6.75	6.75	5.75	5.75	5.75
Stroke, mm	171	171	171	146	146	146
RPM, maximum	1000	1000	1000	1200	1200	1200
Piston speed, FPM	1125	1125	1125	1150	1150	1150
Piston speed, m/s	5.71	5.71	5.71	5.84	5.84	5.84
Total Rod Load, lbs	150000	150000	150000	150000	150000	150000
Total Rod Load, N	667233	667233	667233	667233	667233	667233
Tension, lbs	75000	75000	75000	75000	75000	75000
Tension, N	333617	333617	333617	333617	333617	333617
Compression, lbs	80000	80000	80000	80000	80000	80000
Compression, N	355857	355857	355857	355857	355857	355857
Average Weight with cylinders, lbs	23000	44500	68500	23000	44500	68500
Average Weight with cylinders, kg	10433	20185	31071	10433	20185	31071
Maximum Length, inches	86	135	183	86	135	183
Maximum Length, mm	2184	3429	4648	2184	3429	4648
Nominal Width, inches	191	210	210	210	210	210
Nominal Width, mm	4851	5334	5334	5334	5334	5334
Crankshaft Centerline, from bottom, inches	24	24	24	24	24	24
Crankshaft Centerline, from bottom, mm	609.6	609.6	609.6	609.6	609.6	609.6

Cylinders

The long standing basis of Ariel's successful design philosophy is research showing that modern, moderate and high speed compressor cylinders do not require internal water cooling passages. The absence of water jackets results in larger gas passages, reducing pressure-drop losses and yielding the high efficiency Ariel cylinder for the same sized cylinder casting. The proven design of the Ariel cylinder eliminates the cost of the cylinder cooling system and the major maintenance problems associated with water cooling, such as scaling and corrosion.

Most Ariel cylinders are ion-nitrided, increasing surface hardness and reducing cylinder bore wear to an absolute minimum. Ariel cylinders, combined with the innovative design of every Ariel frame, have earned Ariel the reputation for the lowest operating and maintenance costs of any gas compressor available today.

Specifications

Operation	Class	BORE inches	BORE mm	MAWP psig	MAWP bar	Material
Double-Acting	4-5/8Z:U-VS	4.250; 4.375; 4.625	108; 111; 117	6000	414	Forged Alloy Steel
Double-Acting	4-5/8Z:U-TR-VS	4.250; 4.625	108; 117	6700	462	Forged Alloy Steel
Double-Acting	5-3/8Z:U-VS	5.000; 5.375	127; 137	6000	414	Forged Alloy Steel
Double-Acting	5-3/8Z:U-TR-VS	5.000; 5.375	127; 137	6700	462	Forged Alloy Steel
Double-Acting	6-1/4Z:U	5.875; 6.250	149; 159	2435	168	Ductile Iron
Double-Acting	6-1/4Z:U-VS	5.875; 6.250	149; 159	4500	310	Forged Alloy Steel
Double-Acting	7-1/4Z:U	6.750; 7.250	171; 184	2415	167	Ductile Iron
Double-Acting	7-1/4Z:U-VS	6.750; 7.000; 7.250	171; 178; 184	3500	241	Forged Alloy Steel
Double-Acting	8-3/8Z:U	7.875; 8.375	200; 213	2400	165	Ductile Iron
Double-Acting	9-5/8Z:U	9.125; 9.625	232; 244	1900	131	Ductile Iron
Double-Acting	11Z:U	10.500; 11.000	267; 279	1270	88	Ductile Iron
Double-Acting	12-1/2Z:U	12.000; 12.500	305; 318	800	55	Ductile Iron
Double-Acting	12-1/2Z:U	12.000; 12.500	305; 318	1700	117	Ductile Iron
Double-Acting	14-1/8Z:U	13.625; 14.125	346; 359	815	56	Ductile Iron
Double-Acting	14-1/8Z:U	13.625; 14.125	346; 359	1270	88	Ductile Iron
Double-Acting	15-7/8Z:U	15.375; 15.875	391; 403	635	44	Ductile Iron
Double-Acting	15-7/8Z:U	15.375; 15.875	391; 403	845	58	Ductile Iron
Double-Acting	17-7/8Z:U	17.375; 17.875	441; 454	445	31	Ductile Iron
Double-Acting	17-7/8Z:U	17.375; 17.875	441; 454	635	44	Ductile Iron
Double-Acting	20-1/8Z:U	19.625; 20.125	498; 511	345	24	Ductile Iron
Double-Acting	22Z:U	22.000	559	285	20	Ductile Iron
Double-Acting	24-1/8Z:U	24.125	613	275	19	Ductile Iron
Double-Acting	26-1/2Z:U	26.500	673	230	16	Ductile Iron
Double-Acting	13ZN:UN	13.000	330	1350	93	Ductile Iron
Double-Acting	9-1/4ZK:UK	8.75; 9.25	222; 235	2400	166	Ductile Iron
Double-Acting	9-3/4ZM:UM:ZL:UL	8.75; 9.25; 9.75	222; 235; 248	1700	117	Ductile Iron
Double-Acting	10-3/8ZM:UM:ZL:UL	9.875; 10.375	251; 264	1900	131	Ductile Iron
Double-Acting	11ZM:UM:ZL:UL	10.250; 10.750; 11.000	260; 273; 279	1690	117	Ductile Iron
Double-Acting	11-3/8ZM:UM:ZL:UL	10.875; 11.375	276; 289	1700	117	Ductile Iron
Double-Acting	12-3/8ZM:UM:ZL:UL	11.250; 11.750; 12.375	286; 298; 314	1935	133	Ductile Iron
Double-Acting	12-1/2ZM:UM:ZL:UL	12.000; 12.250; 12.500	305; 311; 318	1350	93	Ductile Iron
Double-Acting	13-5/8ZM:UM:ZL:UL	13.125; 13.625	333; 346	1085	75	Ductile Iron