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Inline Helical Speed Reducers

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#40694
F832BF-11S-B5
Boston Gear 22482 F832BF-11S-B5 helical speed reducer with 11:1 ratio, 2 reduction stages, and case size 3. Designed for inline helical gear drive applications requiring compact, efficient power transmission.
Brand Boston Gear
Model F832BF-11S-B5
$342.07 Each
Free Shipping orders over $100
#40695
F832BF-16S-B5
Boston Gear 22498 F832BF-16S-B5 helical speed reducer with 16:1 ratio, case size 3, and 2 helical stages. This unit features a 56C input flange (B5) and is designed for industrial power transmission applications requiring compact, efficient speed reduction.
Brand Boston Gear
Model F832BF-16S-B5
$690.26 Each
Free Shipping orders over $100
#40706
F842B-20S-B5
Boston Gear 22808 F842B-20S-B5 helical speed reducer with 20:1 ratio, 2 reduction stages, and case size 4. The F842B-20S-B5 configuration provides a compact, efficient drive solution for industrial power transmission applications requiring moderate speed reduction.
Brand Boston Gear
Model F842B-20S-B5
$356.01 Each
Free Shipping orders over $100
#41204
642B-10
Boston Gear 30223263 642B-10 helical speed reducer with 10:1 ratio. Designed for inline mounting in general industrial power transmission applications requiring reliable speed reduction.
Brand Boston Gear
Model 642B-10
$6,597.15 Each
Free Shipping orders over $100
#41360
632B-32
Boston Gear 30223627 632B-32 helical speed reducer with 32:1 ratio. Cast iron housing for general industrial drive applications requiring reliable speed reduction.
Brand Boston Gear
Model 632B-32
$3,689.25 Each
Free Shipping orders over $100
#41383
632B-40
Boston Gear 30223650 632B-40 helical speed reducer with 40:1 ratio. Cast iron housing for general industrial power transmission applications. Single reduction design with solid output shaft.
Brand Boston Gear
Model 632B-40
$3,689.25 Each
Free Shipping orders over $100
#41396
662B-40
Boston Gear 30223663 662B-40 helical speed reducer with 40:1 ratio. Cast iron housing for general industrial drive applications requiring reliable speed reduction.
Brand Boston Gear
Model 662B-40
$14,540.92 Each
Free Shipping orders over $100
#41576
F873B-125S-B5
Boston Gear 32056 F873B-125S-B5 helical speed reducer with 125:1 ratio, 3 helical stages, and case size 7. Designed for industrial power transmission applications requiring high reduction in a compact inline configuration.
Brand Boston Gear
Model F873B-125S-B5
$1,789.68 Each
Free Shipping orders over $100
#41659
221D-14
Boston Gear 30227440 221D-14 speed reducer. This unit is a general-purpose power transmission component designed for industrial applications requiring reliable speed reduction. The 221D-14 model features a compact cast iron housing and provides durable performance in conveyor, material handling, and processing equipment.
Brand Boston Gear
Model 221D-14
$2,218.22 Each
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#44260
226D-PH-14-H1
Boston Gear 30238336 226D-PH-14-H1 worm gear speed reducer with 14:1 single reduction ratio and 2.6" center distance. Features a hollow bore output (H1 configuration) for direct shaft mounting. Cast iron housing suitable for general industrial power transmission applications.
Brand Boston Gear
Model 226D-PH-14-H1
$3,385.75 Each
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#44277
247D-PH-10-H1
Boston Gear 30238353 247D-PH-10-H1 speed reducer with 10:1 ratio. This unit features a hollow output bore (H1 configuration) and is designed for general industrial power transmission applications. The cast iron housing provides durability in demanding environments.
Brand Boston Gear
Model 247D-PH-10-H1
$7,389.51 Each
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#45321
832B-18K-M1
Boston Gear 30267072 832B-18K-M1 is a helical speed reducer with an 18:1 ratio. The unit features a compact design suitable for general industrial power transmission applications. The 832B series housing is constructed from cast iron for durability and long service life.
Brand Boston Gear
Model 832B-18K-M1
$1,104.52 Each
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#45332
832B-32K-M1
Boston Gear 30267083 832B-32K-M1 helical speed reducer with 32:1 ratio. This single-stage helical gearbox provides efficient power transmission in a compact footprint. The 832B frame size offers reliable performance for industrial drive applications requiring moderate speed reduction.
Brand Boston Gear
Model 832B-32K-M1
$1,104.52 Each
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#45343
832B-7.2K-M1
Boston Gear 30267094 832B-7.2K-M1 helical speed reducer with 7.2:1 ratio. This unit features a helical gear design for smooth, quiet operation and high efficiency in industrial power transmission applications. The 832B series housing provides robust support for the internal gearing.
Brand Boston Gear
Model 832B-7.2K-M1
$1,104.52 Each
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#45344
832B-71K-M1
Boston Gear 30267095 832B-71K-M1 helical speed reducer with 71:1 ratio. Designed for general industrial power transmission applications requiring reliable speed reduction.
Brand Boston Gear
Model 832B-71K-M1
$1,104.52 Each
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#45349
832BF-10K-M8
Boston Gear 30267100 832BF-10K-M8 helical speed reducer with 10:1 ratio. This unit features a helical gear design for smooth, quiet operation in industrial power transmission applications. The compact housing provides reliable speed reduction for conveyors, material handling, and general machinery drives.
Brand Boston Gear
Model 832BF-10K-M8
$1,190.10 Each
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#45393
833B-56K-M1
Boston Gear 30267144 833B-56K-M1 helical speed reducer with 56C input flange. This unit features a helical gear design for smooth, quiet operation and high efficiency in industrial power transmission applications. The 833B series housing provides durable cast iron construction for reliable performance in material handling, packaging, and conveyor systems.
Brand Boston Gear
Model 833B-56K-M1
$1,474.68 Each
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#45417
842B-1.9K-M1
Boston Gear 30267168 842B-1.9K-M1 helical speed reducer with a 1.9:1 ratio. This unit features a helical gear design for smooth, quiet operation in industrial power transmission applications. The 842B series housing provides durable support for the internal gearing.
Brand Boston Gear
Model 842B-1.9K-M1
$1,239.85 Each
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#45420
842B-12K-M1
Boston Gear 30267171 842B-12K-M1 helical speed reducer with 12:1 ratio. Cast iron housing with quill input and solid output shaft. Designed for general industrial power transmission applications requiring reliable speed reduction.
Brand Boston Gear
Model 842B-12K-M1
$1,239.85 Each
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#45449
842BF-1.5K-M8
Boston Gear 30267200 842BF-1.5K-M8 is a helical speed reducer rated for 1.5 HP. This compact gearbox is designed for general industrial power transmission applications requiring reliable speed reduction. The unit features a helical gear design for smooth, quiet operation and high efficiency.
Brand Boston Gear
Model 842BF-1.5K-M8
$1,497.57 Each
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#45452
842BF-11K-M8
Boston Gear 30267203 842BF-11K-M8 inline helical speed reducer with 11:1 ratio. This F00241 series reducer features a compact inline design for efficient power transmission in industrial applications. The cast iron housing provides durability and thermal capacity for continuous duty.
Brand Boston Gear
Model 842BF-11K-M8
$1,497.57 Each
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#45491
843B-36K-M1
Boston Gear 30267242 843B-36K-M1 helical speed reducer with 36:1 ratio. Cast iron housing for general industrial power transmission applications.
Brand Boston Gear
Model 843B-36K-M1
$1,603.05 Each
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#45503
843BF-140K-M8
Boston Gear 30267254 843BF-140K-M8 helical speed reducer with 140TC input flange. This unit features a helical gear design for efficient power transmission in industrial applications. The cast iron housing provides durability and vibration dampening. Suitable for conveyors, material handling, and general machinery drives.
Brand Boston Gear
Model 843BF-140K-M8
$1,824.94 Each
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#45529
862B-20K-M1
Boston Gear 30267280 862B-20K-M1 helical speed reducer with 20:1 ratio. This unit is designed for general industrial power transmission applications requiring reliable speed reduction.
Brand Boston Gear
Model 862B-20K-M1
$1,755.28 Each
Free Shipping orders over $100
#45553
862BF-10K-M8
Boston Gear 30267305 862BF-10K-M8 helical speed reducer with 10:1 ratio. This unit features a helical gear design for smooth, quiet operation and high efficiency in industrial power transmission applications. The cast iron housing provides durability and thermal capacity for continuous duty.
Brand Boston Gear
Model 862BF-10K-M8
$2,060.78 Each
Free Shipping orders over $100
#45585
863B-112K-M1
Boston Gear 30267338 863B-112K-M1 helical speed reducer with 112:1 ratio. Cast iron housing for general industrial power transmission applications.
Brand Boston Gear
Model 863B-112K-M1
$2,209.04 Each
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#45634
872B-28K-M1
Boston Gear 30267387 872B-28K-M1 helical speed reducer with 28:1 ratio. This unit features a helical gear design for smooth, quiet operation and high efficiency in industrial power transmission applications.
Brand Boston Gear
Model 872B-28K-M1
$2,887.67 Each
Free Shipping orders over $100
#45698
873B-50K-M1
Boston Gear 30267451 873B-50K-M1 helical speed reducer with 50:1 ratio. Cast iron housing for general industrial power transmission applications. Single reduction design.
Brand Boston Gear
Model 873B-50K-M1
$3,448.89 Each
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#45741
F832B-28K-B5-M1
Boston Gear 30267516 F832B-28K-B5-M1 helical speed reducer with 28:1 ratio, size 3 frame, two helical stages, and 56C input flange. Cast iron housing for general industrial power transmission applications.
Brand Boston Gear
Model F832B-28K-B5-M1
$1,052.54 Each
Free Shipping orders over $100
#45754
F832B-5.1K-B5-M1
Boston Gear 30267533 F832B-5.1K-B5-M1 helical speed reducer with 5.1:1 ratio, case size 3, and 2 helical stages. Features a 56C input flange for direct motor mounting. Suitable for general industrial power transmission applications requiring compact right-angle or inline speed reduction.
Brand Boston Gear
Model F832B-5.1K-B5-M1
$1,052.54 Each
Free Shipping orders over $100
#45817
F832BF-8K-B7
Boston Gear F00698 F832BF-8K-B7 helical speed reducer with 8:1 ratio, 2-stage reduction, and 140TC input flange. Case size 3 housing for general industrial power transmission applications.
Brand Boston Gear
Model F832BF-8K-B7
$493.75 Each
Free Shipping orders over $100
#45937
F842BF-8K-B9
Boston Gear F00832 F842BF-8K-B9 helical speed reducer with 8:1 ratio, 2 helical stages, and case size 4. Designed for industrial power transmission applications requiring compact, efficient speed reduction.
Brand Boston Gear
Model F842BF-8K-B9
$621.25 Each
Free Shipping orders over $100
#45957
F843B-90K-B5-M1
Boston Gear 30267755 F843B-90K-B5-M1 helical speed reducer with 90:1 ratio, 3 helical stages, and case size 4. Features a 56C input flange and M1 output configuration. Cast iron housing for general industrial power transmission applications.
Brand Boston Gear
Model F843B-90K-B5-M1
$1,438.76 Each
Free Shipping orders over $100
#45976
F862B-1.5K-B11
Boston Gear F00871 F862B-1.5K-B11 helical gear with 1.5:1 ratio, 2 helical stages, and case size 6. This open gear is designed for general industrial power transmission applications requiring a compact, high-efficiency helical drive.
Brand Boston Gear
Model F862B-1.5K-B11
$728.75 Each
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#46055
F862BF-3.5K-B11-M8
Boston Gear F862BF-3.5K-B11-M8 is a helical speed reducer with a 3.5:1 ratio, case size 6, and 2 helical stages. This unit features a B11 input flange and is designed for industrial power transmission applications requiring reliable speed reduction.
Brand Boston Gear
Model F862BF-3.5K-B11-M8
$1,918.66 Each
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#46171
F872B-56K-B5-M1
Boston Gear F872B-56K-B5-M1 helical speed reducer with 56:1 ratio, case size 7, and two helical stages. Features a 56C input flange (B5) and M1 output configuration. Cast iron housing for general industrial power transmission applications.
Brand Boston Gear
Model F872B-56K-B5-M1
$2,688.52 Each
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#146469
H3C14S00970
Dodge H3C14S00970 HB382 inline helical speed reducer featuring 140TC C-face motor mounting, 9.70:1 gear ratio, single reduction configuration. Precision helical gearing for high efficiency power transmission in industrial applications.
Brand Dodge
Model H3C14S00970
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#146487
H4C14S03177
Dodge H4C14S03177 HB482 Quantis right angle helical bevel gear reducer, 31.77:1 ratio, 140TC C-face motor mount, clamp collar input, 1-1/4" solid output shaft. Cast iron housing, precision spiral bevel gearing, up to 94% efficiency.
Brand Dodge
Model H4C14S03177
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#146489
H4C14S04126
Dodge H4C14S04126 HB482 right angle helical bevel gear reducer with 41:1 ratio, 140TC C-face flange mount, 1-1/4" input shaft. Quantis RHB series precision ground helical-bevel gearing, cast iron housing, up to 94% efficiency.
Brand Dodge
Model H4C14S04126
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#146494
H4C18S02653
Dodge H4C18S02653 HB482 right angle helical bevel speed reducer, 26.53:1 ratio, 180TC C-face flange mount, 1-1/4" input shaft, Quantis RHB series, spiral bevel gearing cut and lapped, up to 94% efficient, cast iron housing.
Brand Dodge
Model H4C18S02653
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#146530
H6C18S03060
Dodge H6C18S03060 HB682 concentric in-line helical speed reducer featuring 30.6:1 gear ratio, 180TC C-face motor mounting, and precision helical gearing for high-efficiency power transmission applications.
Brand Dodge
Model H6C18S03060
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#146547
H6C18S04541
Dodge H6C18S04541 HB683 Quantis right angle helical bevel speed reducer, 180TC C-face motor mount, 45.41:1 ratio, 1-5/8" input shaft, foot mount configuration, precision spiral bevel gearing, up to 94% efficiency.
Brand Dodge
Model H6C18S04541
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#146551
H6C18S04206
Dodge H6C18S04206 HB682 right angle helical bevel speed reducer with 42.06:1 ratio, 180TC C-face motor input, 1-5/8" solid output shaft. Cast iron housing with precision helical-bevel gear train for 94% efficiency.
Brand Dodge
Model H6C18S04206
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#146571
H8C18S05793
Dodge H8C18S05793 HB883 in-line helical speed reducer, 57.93:1 ratio, 180TC C-face motor mount, 2-1/8" input shaft. Cast iron housing with precision helical gearing for industrial applications. Size 88, double reduction configuration.
Brand Dodge
Model H8C18S05793
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#146580
H10C21S03281
Dodge H10C21S03281 HB1082 right angle helical-bevel speed reducer with 210TC C-face input flange, 32.81:1 ratio, 2-3/8" output shaft. Quantis RHB series premium efficiency helical bevel gearing for industrial applications.
Brand Dodge
Model H10C21S03281
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#149814
H4C18S00428
Dodge H4C18S00428 HB482 right angle helical bevel speed reducer with 180TC C-face frame, 4.28:1 ratio, 1-1/4" solid input shaft. Premium efficiency spiral bevel and helical gear train, cast iron housing, rated for industrial duty applications.
Brand Dodge
Model H4C18S00428
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#149821
H10C28S02494
Dodge H10C28S02494 HB1082 3-piece coupled input inline helical speed reducer, 24.94:1 ratio, 280TC C-face motor flange, 2-3/8" input shaft. Quantis ILH series premium in-line helical gearbox with up to 98% efficiency per stage.
Brand Dodge
Model H10C28S02494
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#787352
H3C14S01564
Dodge H3C14S01564 HB382 right angle helical bevel speed reducer with 140TC C-face motor mount, 15.64:1 gear ratio, single reduction configuration. Cast iron housing with precision spiral bevel and helical gearing for industrial applications.
Brand Dodge
Model H3C14S01564
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#789132
H10C18S12690
Dodge H10C18S12690 HB1083 Quantis right angle helical bevel speed reducer with 180TC C-face frame, 126.90:1 ratio, foot mount configuration. Premium efficiency helical-bevel gear train for right angle power transmission applications.
Brand Dodge
Model H10C18S12690
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#789151
H10C25S01948
Dodge H10C25S01948 HB1082 inline helical speed reducer featuring 19.48:1 ratio, 250TC C-face motor mount, 2-3/8" input shaft. Premium efficiency helical gearing for industrial applications requiring precise speed reduction.
Brand Dodge
Model H10C25S01948
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#1353860
R8372110.00
Grove Gear R8372110.00 RFQ8372-20.77-M7 is an IronMan R Series helical inline reducer with a 20.77:1 ratio. This cast iron unit features a foot mount, quill input for a 140TC motor, and non-motorized configuration. Designed for high-efficiency inline power transmission in industrial applications.
Brand Electra/Grove Gear
Model R8372110.00
$542.79 Each
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#1354040
R8472045.00
Grove Gear R8472045.00 RBQ8472-5.98-M9 IronMan R Series helical inline reducer with 5.98:1 ratio, 180TC quill input, base mount, and cast iron housing. The RBQ8472-5.98-M9 engineering model specifies a size 8472 case with quill input and non-motorized configuration.
Brand Electra/Grove Gear
Model R8472045.00
$736.71 Each
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#1757551
F872BF-18K-B11
Boston Gear F01099 F872BF-18K-B11 helical speed reducer with 18:1 ratio and 140TC input flange. Cast iron housing for general industrial power transmission applications requiring reliable speed reduction.
Brand Boston Gear
Model F872BF-18K-B11
$1,277.01 Each
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#2040109
F832B-5.7KT-B5-M1
Boston Gear 30264865 F832B-5.7KT-B5-M1 inline helical speed reducer with 5.7:1 ratio and 56C input flange. Cast iron housing for general industrial power transmission applications requiring compact inline gearing.
Brand Boston Gear
Model F832B-5.7KT-B5-M1
$1,128.40 Each
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#2040185
F832BF-3.3K-B5-M8
Boston Gear 30265368 F832BF-3.3K-B5-M8 inline helical speed reducer with 3.3:1 ratio and 56C input flange. Cast iron housing for general industrial power transmission applications requiring compact parallel-shaft speed reduction.
Brand Boston Gear
Model F832BF-3.3K-B5-M8
$1,134.09 Each
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#2040187
F842B32KB7M4
Boston Gear D07242 F842B32KB7M4 open gear for general industrial power transmission applications. This gear is part of the Boston Gear open gearing line, suitable for use in conveyors, material handling, and other machinery requiring reliable gear drives.
Brand Boston Gear
Model F842B32KB7M4
$650.00 Each
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#2040224
F842BF-10K-B7-M7
Boston Gear F842BF-10K-B7-M7 speed reducer with 10:1 ratio and 140TC input flange. This unit features a cast iron housing and is designed for general industrial power transmission applications requiring reliable speed reduction.
Brand Boston Gear
Model F842BF-10K-B7-M7
$868.23 Each
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#2040244
F843B80KB5CMBA56
Boston Gear D02820 F843B80KB5CMBA56 open gear speed reducer. This unit is designed for general industrial power transmission applications requiring a compact, reliable gear drive. The catalog number D02820 and engineering number F843B80KB5CMBA56 identify this specific configuration.
Brand Boston Gear
Model F843B80KB5CMBA56
$1,419.54 Each
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#6374296
R57/A 87.8047685001.0001.21.10
SEW Eurodrive R57/A 87.8047685001.0001.21.10 1750/65 RPM 26.97/infinite Helical Gear Unit
Brand SEW Eurodrive
Model R57/A 87.8047685001.0001.21.10
$605.11 Each
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#6456055
R97/A 87.7403742501.001.17.90
SEW R97/A 87.7403742501.001.17.90 Ratio 20.14 Helical Gear Unit
Brand SEW Eurodrive
Model R97/A 87.7403742501.001.17.90
$2,015.74 Each
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