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Product Category

Vacuum Pumps

Busch vacuum pumps for composite manufacturing — the world’s most trusted brand in industrial vacuum. Oil-lubricated R5 rotary vane pumps and dry-running SECO pumps in mobile cart-mounted and stationary configurations for vacuum bagging, resin infusion, autoclave support, and general composite lamination processes.

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Coast-Line supplies Busch Vacuum Solutions pumps — the world market leader in industrial vacuum with over 3 million R5 pumps in operation globally. Busch pumps are the benchmark choice for vacuum bagging, resin infusion, and advanced composite manufacturing processes worldwide. We supply both mobile cart-mounted systems for flexible shop operations and stationary centralized systems for permanent production installations — each sized and configured for your specific layup area, bag volume, and process requirements. 

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R5 Oil-Lubricated Rotary Vane
Deep Vacuum · High CFM · Continuous Duty
Ultimate pressure to 0.075 Torr (29.9" Hg) — the deepest vacuum for demanding lamination
3–1,130 CFM pumping speed range — from bench-top to large-area infusion
Designed for continuous operation — runs 24/7 without overheating at ultimate pressure
Carbon fiber vanes standard — long service life, high durability
Oil mist eliminator for 99.9% oil-free exhaust — clean shop environment
Best choice for pre-preg, autoclave support, and large vacuum bag systems
SECO Dry Rotary Vane
Oil-Free · Low Maintenance · Compact
Completely oil-free — no oil changes, no oil mist, no contamination risk to composite layup
Self-lubricating graphite Aerodur vanes — sealed-for-life bearings
Minimal maintenance — no routine oil or filter service required
Compact direct-drive construction — easy installation in tight spaces
Ideal for dry lay-up, room-temperature cure, and contamination-sensitive processes
2–28+ CFM range — suited to small-to-medium composite operations
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Mobile Systems

Busch Vacuum Solutions
Oil-Lubricated Rotary Vane
Busch R5 RA — Mobile Cart-Mounted Vacuum System
The Busch R5 RA is the industry standard for composite manufacturing vacuum — a single-stage, oil-lubricated, air-cooled, direct-driven rotary vane pump mounted on a wheeled cart for shop-floor mobility. Designed for continuous duty, the R5 RA can be operated at ultimate pressure without overheating, making it ideal for extended layup and infusion processes where vacuum must be held overnight or across shifts. Over 3 million R5 pumps are in operation globally — it is the most proven vacuum pump on the market.

The cart configuration includes a liquid-filled vacuum gauge, inline cassette filter, manual release valve, and hose barb connector — ready to connect directly to vacuum bagging circuits. The integrated oil mist elimination system provides 99.9% oil-free exhaust, keeping the composite shop clean. An integrated float valve regulates oil return depending on oil level, ensuring consistent performance. High-performance carbon fiber vanes are standard — robust, long-service-life vanes that resist wear even under demanding continuous operation.

Available in pumping speeds from 18 CFM (R5 RA 0025) to 180+ CFM (R5 RA 0255) for mobile applications — matched to the bag surface area and required evacuation time. Variable speed drive (VSD) available on larger models for energy savings of up to 50% and better vacuum level control during the infusion window.
Industry Standard Composite Pump Oil-Lubricated RA Continuous Duty 18–180+ CFM Mobile Carbon Fiber Vanes 0.075 Torr Ultimate VSD Option
Key Performance Data
TechnologySingle-stage rotary vane
LubricationOil-lubricated, recirculating
Ultimate Pressure0.075 Torr (RA series)
OperationContinuous — no overheating at Pu
VanesCarbon fiber — high durability
Exhaust99.9% oil-free (oil mist eliminator)
Common Mobile Models
R5 RA 002518 CFM1 HP
R5 RA 006345 CFM3 HP
R5 RA 010071 CFM5 HP
R5 RA 0255180 CFM10 HP
Busch Vacuum Solutions
Dry-Running Rotary Vane
Busch SECO SV — Mobile Dry-Running Vacuum System
The Busch SECO SV is a compact, oil-free, dry-running rotary vane vacuum pump — the clean-process alternative to oil-lubricated systems. Self-lubricating Aerodur 274 Zirkon graphite vanes generate their own lubrication through graphite dust, eliminating oil entirely.

No oil changes, no oil mist, no risk of oil contamination to composite surfaces. Sealed-for-life bearings and minimal maintenance requirements make the SECO the low-total-cost option for shops where oil management is a concern.

Cart-mounted for shop-floor mobility with the same liquid-filled vacuum gauge, filter, and hose barb standard equipment as the R5 systems. The SECO's compact direct-drive construction allows installation in confined spaces and is ideal for smaller composite operations, educational facilities, prototyping labs, and shops processing low-temperature cure or ambient cure dry fabrics where deep vacuum is less critical.

Pumping speeds from 2 CFM (SECO SV 1005) to 28+ CFM (SECO SV 1040) — well-matched to small-to-medium vacuum bags. Ultimate pressure is approximately 90–112 Torr (approximately 26–27" Hg) — sufficient for most dry fabric wet layup and infusion processes but not as deep as the R5 for pre-preg or precision consolidation applications.
100% Oil-Free Dry-Running SECO No Oil Changes 2–28+ CFM Aerodur 274 Zirkon Vanes Compact · Direct Drive Low Maintenance
Key Performance Data
TechnologyDry rotary vane
LubricationNone — self-lubricating vanes
Ultimate Pressure~90–112 Torr (~27" Hg)
VanesAerodur 274 Zirkon graphite
BearingsSealed-for-life
MaintenanceMinimal — no oil service
Common Mobile Models
SECO SV 10052 CFMCompact
SECO SV 10107 CFMCompact
SECO SV 102518 CFMMid
SECO SV 104028 CFMMid
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Stationary Systems

Busch Vacuum Solutions
Oil-Lubricated · Stationary
Busch R5 RA — Stationary Base-Mounted Vacuum System
For composite manufacturing facilities with permanent layup stations, large autoclave loading bays, or high-volume infusion operations requiring continuous centralized vacuum, Busch R5 RA pumps are configured as stationary base-mounted systems. Larger models from the R5 RA 0400 (330 CFM) through R5 RA 0630 (490 CFM) and above are direct-mounted on industrial base frames with flexible couplings, common vacuum manifolding, and centralized distribution to multiple lay-up stations via hardpipe or vacuum hose drops.

A central vacuum system consolidates multiple processes or workstations onto a single vacuum supply, reducing the total number of pumps needed while improving energy efficiency and uptime. Busch's systems can be configured as duplex (two-pump alternating) systems with automatic lead/lag switchover to ensure continuous vacuum even during maintenance intervals. The ECOTORQUE variable speed drive option provides up to 50% additional energy savings by matching pump output to actual demand — critical in facilities where vacuum load varies across shifts or production programs.

Water-cooled versions available for enclosed or high-ambient-temperature installations. Busch Master Control integrates multiple pumps into a single monitored system. Full factory systems-building support available from Busch's US systems engineering center.
Central Vacuum Supply High Volume RA 330–490+ CFM Duplex / Alternating ECOTORQUE VSD Water-Cooled Option Multi-Station Distribution
Key Performance Data
ConfigurationBase-frame or rack-mounted
Ultimate Pressure0.075 Torr (continuous)
CoolingAir-cooled or water-cooled
Energy OptionECOTORQUE VSD — up to 50% savings
ControlBusch Master Control (multi-pump)
MonitoringDigital condition monitoring available
High-Volume Stationary Models
R5 RA 0400330 CFM20 HP
R5 RA 0630490 CFM25 HP
Duplex System2× pumpLead/Lag
Custom SystemTo 1,130 CFMEngineered
Busch Vacuum Solutions
Vacuum System · COMBI
Busch COMBI — Vacuum Booster + Backing Pump System
The Busch COMBI system combines a PANDA rotary lobe vacuum booster with an R5 oil-lubricated rotary vane backing pump in a single compact unit — the highest-performance vacuum solution for demanding composite processes. The booster dramatically increases the pumping speed at low pressures where a single-stage pump would struggle to maintain evacuation rates. COMBI systems are the ideal choice for large autoclave support, oversized vacuum bag assemblies, and infusion of very thick or complex composite structures where maintaining deep vacuum and high evacuation speed simultaneously is critical. Available as COMBI BRV (R5 rotary vane backing pump) or COMBI BNV (COBRA dry screw backing pump). Pumping speed at 1 mbar ranges from 276 ACFM minimum to 2,259 ACFM maximum — delivering near-high-vacuum performance at throughput rates otherwise requiring much larger single-stage systems. Ultimate pressure ≤0.0075 Torr. Compact skid-mounted units suitable for permanent installation adjacent to autoclave or large layup tables. Busch systems-building engineering available for custom configuration.
High Performance Composite Process PANDA Booster + R5 Backing 276–2,259 ACFM @ 1 mbar ≤0.0075 Torr Autoclave Support Large Bag Assemblies
COMBI System Data
ConfigurationBooster + backing pump (skid)
Pumping Speed @ 1 mbar276–2,259 ACFM
Ultimate Pressure≤0.0075 Torr
COMBI BRV BackingR5 oil-lubricated rotary vane
COMBI BNV BackingCOBRA dry screw
Best ForAutoclave · Large infusion
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Technology & Selection Guide

How Rotary Vane Vacuum Technology Works

Rotor Spins

Eccentric rotor with multiple vanes mounted inside a cylindrical housing. Centrifugal force extends vanes outward.

Chambers Form

Vanes slide against housing wall, forming sealed chambers that trap a specific volume of air from the inlet.

Volume Shrinks

Chamber volume decreases as rotor continues rotating, compressing trapped air. Inlet side is continuously drawing in new air from the vacuum bag.

Air Expelled

Compressed air is expelled through outlet and exhaust filter. Continuous process creates steady vacuum at inlet — your vacuum bag connection.

Pump Sizing Guide — Matching CFM to Your Process
Application Bag Area Recommended CFM Pump Recommendation
Prototype / small part vacuum bagging<10 ft²2–18 CFMSECO SV 1005/1010 or R5 RA 0025
Small-medium part infusion / wet layup10–50 ft²18–45 CFMR5 RA 0025–0063 (mobile cart)
Medium part pre-preg vacuum bag50–200 ft²45–100 CFMR5 RA 0063–0100 (mobile/stationary)
Large part infusion / aircraft structure200–600 ft²100–330 CFMR5 RA 0255–0400 (stationary)
Central vacuum / multi-station production600 ft²+330 CFM+R5 RA 0630 duplex / COMBI system
Autoclave / complex thick-sectionAnyHigh speed + deep PuBusch COMBI booster system