Spiral Bevel Right Angle Gearboxes, 1:1 or 2:1 Ratio

2-Way and 3-Way Models. Hollow Bore and Counter Rotating Configurations Too.

  • Sealed, Leak Proof Gearcase
  • Machined Aluminum Construction
  • Anodized Gearcase
  • 303/304 Stainless Steel Shafts
  • 8620 12DP 22T Heat-Treated Case-Hardened Gears
  • Double Sealed Ball Bearings
  • Tapered Roller Bearings
  • Dual Lip Spring Loaded Shaft Seals
  • Stainless Steel Fasteners
  • Pre-Lubricated w/Lubriplate 1500
  • Zerk Porting
  • Stainless Steel Keys Included
Click image to enlarge

Branham Expands Spiral Bevel Gearbox Product Line

Now! 4.125 in. wide 2- and 3-Way #4303 models. Select from .750 and 1.00 inch shafts as well as 20 and 25mm shafts with metric mounting. Stainless steel keys, fasteners and shafting. A Spiral Bevel 2:1 with 5.00 wide body, 3-Way and .750 inch shafts gearbox has been added too.

Our #4304 models are 100% mounting interchangeable with like models from companies such as Zero-Max and Mitrpak. Our mattress industry series gearboxes are directly interchangeable with Cyclo-Index and Gribetz Intl.

All models are constructed with double sealed, heavy duty ball bearings and case-hardened gears.

Branham Spiral Bevel Gearboxes

Product # Model Mount Ratio Housing Width (in.) # of Shafts Shaft Dia. # of Ball Bearings Max Torque, in. lb. Max RPM
4304-0403 2SB2.125/1:1FMSBM.625 Flange & Side 1:1 2.125 2 .625 in. 4 82 1800
4304-0412 2SB2.125/1:1SBM.625 Side Base 1:1 2.125 2 .625 in. 4 82 1800
4304-0428 2SB2.125/1:1BM.500 Base 1:1 2.125 2 .500 4 82 1800
4304-0401 3SB2.125/1:1FMSBM.625 Flange & Side 1:1 2.125 3 .625 in. 6 82 1800
4304-0402 3SB2.125/1:1SBM.625 Side Base 1:1 2.125 3 .625 in. 6 82 1800
4304-0416 3SB2.125/1:1FMSBMCR.625 Flange & Side 1:1 2.125 3, Counter Rotate .625 in. 6 82 1800
4304-0601 3HBSB2.57/1:1SBM.625 Side Base 1:1 2.57 1, Hollow Bore .625 in. 6 82 1800
4304-0602 2SB2.57/1:1SBM.625 Side Base 1:1 2.57 2 .625 in. 4 82 1800
4304-0600 3SB2.57/1:1SBM.625 Side Base 1:1 2.57 3 .625 in. 6 82 1800
4303-0041 2SB4.125/1:1BM.750 Base 1:1 4.125 2 .750 in. 2 693 1750
4303-0040 2SB4.125/1:1BM1.00 Base 1:1 4.125 2 1.00 in. 2 693 1750
4303-0043 2SB4.125/1:1BM25 Base 1:1 4.125 2 25mm 2 693 1750
4303-0045 2SB4.125/1:1BM20 Base 1:1 4.125 2 20mm 2 693 1750
4303-0030 3SB4.125/1:1BM1.00 Base 1:1 4.125 3 1.00 in. 3 693 1750
4303-0031 3SB4.125/1:1BM25 Base 1:1 4.125 3 25mm 3 693 1750
4303-0042 3SB4.125/1:1BM.750 Base 1:1 4.125 3 .750 in. 3 693 1750
4303-0044 3SB4.125/1:1BM20 Base 1:1 4.125 3 20mm 3 693 1750
4303-0050 3SB5.00/2:1BM.750 Base 2:1 5.00 3 .750 in. 3 876 2400

Torque Table For 2.125 and 2.57 in. Housing Width

RPM HP Torque, in. lb.
50 .06 76
100 .13 82
200 .26 82
300 .39 82
600 .75 79
900 1.0 70
1200 1.3 68
1800 1.8 63

Torque Table For 4.125 in. Housing Width

RPM HP Torque, in. lb.
100 1.1 693
300 3.1 650
400 4.1 645
690 6.8 620
850 8.3 615
1150 10.9 600
1750 16.1 580

Torque Table For 5.00 in. Housing Width

RPM HP Torque, in. lb.
100 0.7 876
300 2.0 829
400 2.6 815
690 4.3 788
850 5.2 777
1150 6.9 761
1750 10.2 736
2400 13.7 717

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