Brake Products, Inc.   16751 Hilltop Park Place
  Chagrin Falls, Ohio 44023
  Phone: (440) 543-7962
  Fax:     (440) 543-7963
  Web:   www.brakeproducts.com
  Email: sales@brakeproducts.com
Supplier of Industrial Brake Parts Since 1985
• Why Renold Ajax?
• Features
• Full-Flex Metal Seal Couplings
• Flex-Rigid Metal Seal Couplings
• Mill Motor Metal Seal Couplings
• Flange and Bore Specifications for Metal
  and O-Ring Seal Couplings
• Typical Custom Designed Couplings
• Full-Flex O-Ring Seal Couplings
• Flex-Rigid O-Ring Seal Couplings
• Mill Motor O-Ring Seal Couplings
• Heavy Duty Couplings
• Full-Flex Heavy Duty O-Ring Seal Couplings
• Flex-Rigid Heavy Duty O-Ring Seal Couplings
 		  • Standard Extended Shaft Gaps
• Installation Information Standard and Heavy Duty Sizes
• Installation, Maintenance, Lubrication
• D Series Couplings High Misalignment, Full-Flex
• D Series Couplings High Misalignment, Flex-Rigid
• DS Series Spindle Couplings
• D Series and DS Gear Tooth Design Ratings and
  Engineering Layout Details
• Ajax Pin and Bush Couplings
• Cast Iron Couplings Forged Steel Couplings
• Service Parts for Ajax Pin and Bush Couplings
• Special Pin and Bush Couplings
• Download brochure in Adobe Acrobat® format (1.28MB)
D Series Couplings - High Misalignment, Flex-Rigid
 
D Series Flex-Rigid couplings are commonly used pairs with a floating shaft to connect widely separated equipment, accommodating offset, angular or combined misalignment.
 
Universally used for pinch roll, shear drives and tension bridles on auxiliary rolling mill equipment.
 
Specifications/Dimensions
Coupling Size 100 150 200 250 300 350 400 450 500 550 600 700
Catalog No. 4908 100-1 150-1 200-1 250-1 300-1 350-1 400-1 450-1 500-1 550-1 600-1 700-1
Design Rating See Table Page 23
Flex-Hub
Maximum Bore-With		 1.6 Hub/Bore Ratio 1.00 1.50 2.00 2.50 3.00 3.50 4 00 4.50 5.00 5.75 6 50 7.50
Square Key 1.13 1.63 2.13 2.63 3.13 3.63 4.13 4.63 5.25 6.00 6.75 7.75
Reduced Key 1.19 1.75 2.25 2.75 3.38 3.88 4.38 5.00 5.75 6.50 7.25 8.25
Rigid-Hub
Maximum
Bore-With		 1.6 Hub/Bore Ratio 1.50 2.50 3.00 3.50 4.25 4.75 5.25 6.00 6.50 7.75 9.00 10.00
Square Key 1.75 2.75 3.25 3.75 4.50 5.25 6.00 6.50 7.50 8.50 9.50 11.25
Reduced Key 1.81 2.94 3.38 3.88 4.69 5.50 6.50 7.00 7.75 9.00 10.00 12.00
Weight-Lbs. Solid Hubs 5 20 32 53 77 118 160 213 322 455 604 930
WR2-Lb.-ln.2 6 64 200 335 553 1200 1980 3000 7240 11100 16700 33200
Dimensions
Inches		 A 3.50 6.0 6.94 8.00 9.00 10.69 11.63 12.75 14.75 16.38 18.00 20.38
B @ 3 1/2° 3.00 4.56 5.75 6.38 7.59 8.22 9.28 10.03 11.03 12.63 14.63 16.88
B @ 6° - 4.50 5.75 6.25 7.59 8.38 9.31 10.12 11.12 12.78 14.50 16.56
CR .219 .188 .188 .219 .219 .250 .281 .313 .313 .313 .375 .375
E @ 3 1/2° 1.81 2.19 2.75 3.06 3.66 3.91 4.44 4.81 5.31 6.00 7.00 8.00
E @ 6° - 2.06 2.56 2.88 3.44 3.69 4.19 4.50 5.00 5.69 6.62 7.63
ER 1.38 2.19 2.81 3.09 3.72 4.06 4.53 4.91 5.41 6.31 7.25 8.50
O @ 3 1/2° 1.75 2.28 2.88 3.69 4.38 5.00 5.63 6.44 7.44 8.63 9.25 11.00
O @ 6° - 2.28 2.88 3.62 4.31 4.91 5.50 6.37 7.31 8.44 9.12 10.75
G 2.50 3.94 4.75 5.50 6.50 7.63 8.69 9.75 10.88 12.38 13.75 15.88
 
  1. Exposed bolt flanges furnished as standard, sizes 600/700 furnished exposed bolt only.
  2. Shrouded bolt flanged when specified: Use -2 suffix; e.g.: 4908-200-2.
  3. Specify misalignment angle ± 3 1/2° or ± 6°.
  4. Gear teeth are induction hardened.
  5. Offset capacity is dependent upon shaft length.
NOTE: Consult Renold with application data for review.
IMPORTANT - when used as a floating shaft arrangement, check critical speed vs. operating speed.
SOLID SHAFT
                    4.7 x 106
N1 (1st Critical) = --------- x D > 1.5 max. operating speed.
                        L2