User's Manual

compressors
BENDIX
®
BA-921
®
SIDE MOUNT COMPRESSOR
The Bendix
®
BA-921
®
Side Mount Compressor is one of the complete line of Bendix air brake components that can help
improve vehicle performance, increase efficiency, and reduce your overall operating costs. To find out more, talk to your
Bendix Account Manager, call 1-800-AIR-BRAKE (1-800-247-2725), or visit www.bendix.com today.
Bendix Commercial Vehicle Systems LLC • 901 Cleveland Street • Elyria, OH 44035 • 1-800 AIR-BRAKE (1-800-247-2725)
BW2989 ©2014 Bendix Commercial Vehicle Systems LLC, a member of the Knorr-Bremse Group • 09/14 • All Rights Reserved
Typical weight: 39 Lbs.
Number of cylinders 1
Bore Diameter 3.622 in. (92 mm)
Stroke 2.126 in. (54 mm)
Calculated displacement at 1250 RPM 15.8 CFM
Flow Capacity @ 1800 RPM & 120 PSI 11.6 CFM
Flow Capacity @ 3000 RPM & 120 PSI 16.5 CFM
Approximate horesepower required:
Loaded 1800 RPM at 120 PSIG 4.6 HP
Unloaded 1800 RPM 0.8 HP
Minimum coolant flow at maximum RPM 2.5 Gals./Min.
Maximum inlet air temperature 250°F
Maximum discharge air temperature 400°F
Minimum oil pressure required 15 PSI
Minimum oil-supply line size 3/16" I.D.
Minimum unloader-line size 3/16" I.D.
Minimum Governor Cut-out Pressure 120 PSI
Bendix
®
BA-921
®
Side Mount Compressor Specifications
Efficient unloading
system
Clutchless design
Low oil passing
Based on industry
leading best-in-class
design
Reduced energy demand
during idle
Robust design, eliminates inherent
service issues with competitor's
product
Minimzes harmful oil vapors from
contaminating the air system
Lowest total cost of ownership
FEATURES BENEFITS
Bendix
®
compressors provide the power that keeps you on the road and the value
that keeps you coming back.
BA-921
®
SMC Performance Curves
Bendix
®
Quality and Service Guaranteed
Bendix stands behind every compressor with complete warranty
protection and a veteran technical support team to help you
troubleshoot and resolve any air brake system challenges. From
sales to service, engineering to production, the Bendix team has
years of practical experience hard at work for you.
Part # Description
K044642 Bendix SN Compressor
K075155 Bendix Re Compressor
K023764 Head Gasket Kit
K109119 ESS Unloader Kit
K105705 Safety Valve Kit
K032046 Governor Hardware Kit
Part # Cross Reference
3709920C92 Navistar OE Part #
K042162 Bendix OE Part #
2513644C91 Retro Kit (Compressor & Hoses)
0
5
10
15
20
25
500 1000 1500 2000 2500 3000
Air Delivery (cfm)
Compressor Speed (RPM)
TuFlo
®
750 360cc Single w/ DLU
BA-921
®
SMC
0.0
1.0
2.0
3.0
4.0
5.0
6.0
500 1000 1500 2000 2500 3000
Unloaded HP
Compressor Speed (RPM)
TuFlo
®
750 360cc Single w/ DLU
BA-921
®
SMC