Established 1995

Compressor Spares

Cylinders and Pistons


  • Each cylinder separately cast
  • Graded casting used to meet OEM quality
  • Machined & bored to equalising permissible tolerances
  • Perfectly vertically bored and honed
  • Perfectly drilled with proper fixture ensure proper assembly with related parts


  • Available in steel, cast iron & alloy, fully machined aluminium
  • Perfect dimension, finishing and material construction with specification
  • Diamond polished and packed properly
  • Variety of certified base stock magnaflux tested
  • Dully checked manually individual piston for porosity, dimensional accuracy, Weight and piston ring groove size

Piston Rod

  • Properly heat treated with proper raw materials
  • Ensure proper tensile strength
  • Perfect machine with proper thread matching with cross head and piston nut
  • Ensure surface treatment with grinding with four micro inch RMS surface

Crank Shaft

Overhung Crankshaft

  • Our overhung crankshaft designs make possible solid connecting rod.
  • Crankshaft rotates on two heavy duty ball bearings.
  • Overhung crankshaft with replaceable crank pin bush
  • Perfect machining with proper drilling for centrifugal unloaders
  • Dynamic balanced crankshaft rotate freely
  • Axial aligned, perfect machined and hydraulic pressed crankshaft


  • Ensure fully machined forging crankshaft
  • Dynamic balanced crankshaft rotate freely
  • Axial aligned to minimise vibration of compressor
  • Perfect machining within permissible tolerances to match with main bearing and connecting rod bushing
  • Ensure require oil pressure with "Oil floating bushing"

Our long life crankshaft assure minimum wear-trat, labour, parts cost and high compressor efficiency


Steel Bushings

  • Proper basic material with CNC machining, proper in-house heat treated and maintained tolerances surface grinding with smooth shining surface
  • Ensure perfect size match with the dimension with crankshaft and connecting rod for easy assembly with long life

Aluminium Bushings

  • Our aluminium main bearing bush (one piece with axial cut) and connecting rod bush (two halves) made from perfect composition with aluminium ingots
  • Proper heat treated and fully machine with perfection equalizing OEM size
  • Perfect axial cut to ensure oil pressure in main bearing bush and connecting rod bush
  • Diamond cut finish provide smooth and shining surface
  • Drilled and machined as per OEM quality

Rings and Packings

Piston Ring, Wearing Rings and Rider Rings

  • Individual cast piston ring with complete matching and proper cut
  • Standard and lapped with requirement
  • Metallic, carbon filled teflon, bronze filled teflon, glass filled teflon & TFE Thermon plastics

Valve and Valve Components

Channel Valves

  • NB offers complete range of channel valve design for all reciprocating type compressors
  • Maximum flow is utilized while perfect sealing is ensured.
  • Exclusive design, perfect machined
  • Precision formed and lapped to have best sealing.
  • Reduce metal fatigue and stress.
  • Standard materials includes graded casting 410, 316 and K-model SS, INconel X-750
  • Anti corrosive treated to avoid corrosion damage in CI valve parts

Valve Seats and Stop Plates

  • Nodular iron castings are carefully in house heat treated to desired properties for each applications. Insure maximum strength wear and impact resistance.
  • Perfect machining and drilling
  • Interchange as per part number
  • Ensure and perfect assembly with related and reference parts
  • Perfect lift with proper machining to have confirm pressure
  • Machined, drilled, grinder and lapped

Metal valve Guides

  • Highest quality machined steel guide. Precision formed to exacting tolerances that assure proper motion and movements of channel in the valves.
  • Our highest quality guides can significantly improve your compressor valve life.
  • Highest quality sintered/machine alloy
  • Exacting proper tolerances
  • Suitable for lubricated and non lubricated compressor valves

Seat Plates (Flip Plates)

  • 316, 410 stainless steel and special order steel are heat treated
  • 100% flat with ground and machined lapped
  • Elector polished with micro grinding finishing
  • Demagnetized to perfect movement and proper sealing with channel
  • Ensure prompt pressure and long lasting life of compressor valve

Connecting Rods

Connecting Rods

  • Aluminium, bronze, SG iron & forging connecting rods.
  • Precisely machined at both end.
  • Ensured perfect dimension at Bush & pin holes machining.
  • Great finishing & long lasting.
  • Ensure permissible tolerances.

Well match dimension & size in two piece Forging Connecting Rod.