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Emerson Bearing Company
201 Brighton Avenue
Boston, MA 02134
Phone: (800) 225-4587 • Fax: (800) 252-1996
Email: info@emersonbearing.com
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Our TW type linear motion bearings, often referred to as the ‘Super Series,” are used for applications that require single-direction motion, and are available in a wide variety of shaft shapes and materials. These lightweight, low-noise bearings feature a higher load capacity and travel life than the SW series, while the floating integral wiper seals allow for easy self-alignment. All bearings have an advanced polymer resin cage.

These bearings are available in both standard and open style. The open style incorporates bottom plates and mounting screws to keep bushings securely in place.

We also offer a complete range of slide units, which act as housings for the slide bushings; these come predrilled and ready for mounting as needed.

Available Dimensions:

Shaft Diameter (dr): 0.25 in. to 2 in.

Outer Diameter (D): 0.5 in. to 3 in.

Length (L): 0.75 in. to 4 in.

Distance Between Retaining Rings (B): 0.515 in. to 3.206 in.

Retaining Ring Width (W): 0.0390 in. to 0.1029 in.

Retaining Ring Diameter (D1): 0.4687 in. to 2.8379 in.

Dynamic Load (C): 60 lb to 2430 lb

Static Load (Co): 80 lb to 3040 lb

Configuration: Both open and standard types are available.  

Seal Type: Seals on both ends are available, as well as no seals.

TW Standard Type TOPBALL Slide Bush Dimensions
TW-Type-Linear-Motion
Unit of Measure
1 2 

Item #

(dr) Shaft Diameter

(D) Outer Diameter

(L) Length

(B) Distance btwn Retaining Rings

(W) Retaining Ring Width

(D1) Retaining Ring Diameter

(C) Dynamic Load

(Co) Static Load

Configuration

Seal Type

TW4 N/A 0.25 in N/A 0.5000 in N/A 0.750 in N/A 0.515 in N/A 0.0390 in N/A 0.4687 in N/A 60 lb N/A 80 lb N/A Standard Type N/A No Seals
TW4UU N/A 0.25 in N/A 0.5000 in N/A 0.750 in N/A 0.515 in N/A 0.0390 in N/A 0.4687 in N/A 60 lb N/A 80 lb N/A Standard Type N/A Seals on Both Ends
TW6 N/A 0.375 in N/A 0.6250 in N/A 0.875 in N/A 0.703 in N/A 0.0390 in N/A 0.5880 in N/A 95 lb N/A 120 lb N/A Standard Type N/A No Seals
TW6UU N/A 0.375 in N/A 0.6250 in N/A 0.875 in N/A 0.703 in N/A 0.0390 in N/A 0.5880 in N/A 95 lb N/A 120 lb N/A Standard Type N/A Seals on Both Ends
TW8 N/A 0.5000 in N/A 0.8750 in N/A 1.250 in N/A 1.032 in N/A 0.0459 in N/A 0.8209 in N/A 230 lb N/A 290 lb N/A Standard Type N/A No Seals
TW8UU N/A 0.5000 in N/A 0.8750 in N/A 1.250 in N/A 1.032 in N/A 0.0459 in N/A 0.8209 in N/A 230 lb N/A 290 lb N/A Standard Type N/A Seals on Both Ends
TW 8-OP N/A 0.5000 in N/A 0.8750 in N/A 1.250 in N/A 1.032 in N/A 0.0459 in N/A 0.8209 in N/A 230 lb N/A 290 lb N/A Open Type N/A No Seals
TW 8 UU-OP N/A 0.5000 in N/A 0.8750 in N/A 1.250 in N/A 1.032 in N/A 0.0459 in N/A 0.8209 in N/A 230 lb N/A 290 lb N/A Open Type N/A Seals on Both Ends
TW10 N/A 0.6250 in N/A 1.1250 in N/A 1.500 in N/A 1.112 in N/A 0.0559 in N/A 1.0590 in N/A 400 lb N/A 500 lb N/A Standard Type N/A No Seals
TW10UU N/A 0.6250 in N/A 1.1250 in N/A 1.500 in N/A 1.112 in N/A 0.0559 in N/A 1.0590 in N/A 400 lb N/A 500 lb N/A Standard Type N/A Seals on Both Ends
TW 10-OP N/A 0.6250 in N/A 1.1250 in N/A 1.500 in N/A 1.112 in N/A 0.0559 in N/A 1.0590 in N/A 400 lb N/A 500 lb N/A Open Type N/A No Seals
TW 10 UU-OP N/A 0.6250 in N/A 1.1250 in N/A 1.500 in N/A 1.112 in N/A 0.0559 in N/A 1.0590 in N/A 400 lb N/A 500 lb N/A Open Type N/A Seals on Both Ends
TW12 N/A 0.7500 in N/A 1.2500 in N/A 1.625 in N/A 1.272 in N/A 0.0559 in N/A 1.1760 in N/A 470 lb N/A 590 lb N/A Standard Type N/A No Seals
TW12UU N/A 0.7500 in N/A 1.2500 in N/A 1.625 in N/A 1.272 in N/A 0.0559 in N/A 1.1760 in N/A 470 lb N/A 590 lb N/A Standard Type N/A Seals on Both Ends
TW 12-OP N/A 0.7500 in N/A 1.2500 in N/A 1.625 in N/A 1.272 in N/A 0.0559 in N/A 1.1760 in N/A 470 lb N/A 590 lb N/A Open Type N/A No Seals
TW 12 UU-OP N/A 0.7500 in N/A 1.2500 in N/A 1.625 in N/A 1.272 in N/A 0.0559 in N/A 1.1760 in N/A 470 lb N/A 590 lb N/A Open Type N/A Seals on Both Ends
TW16 N/A 1.0000 in N/A 1.5625 in N/A 2.250 in N/A 1.886 in N/A 0.0679 in N/A 1.4687 in N/A 850 lb N/A 1060 lb N/A Standard Type N/A No Seals
TW16UU N/A 1.0000 in N/A 1.5625 in N/A 2.250 in N/A 1.886 in N/A 0.0679 in N/A 1.4687 in N/A 850 lb N/A 1060 lb N/A Standard Type N/A Seals on Both Ends
TW 16-OP N/A 1.0000 in N/A 1.5625 in N/A 2.250 in N/A 1.886 in N/A 0.0679 in N/A 1.4687 in N/A 850 lb N/A 1060 lb N/A Open Type N/A No Seals
TW 16 UU-OP N/A 1.0000 in N/A 1.5625 in N/A 2.250 in N/A 1.886 in N/A 0.0679 in N/A 1.4687 in N/A 850 lb N/A 1060 lb N/A Open Type N/A Seals on Both Ends
TW20 N/A 1.2500 in N/A 2.0000 in N/A 2.625 in N/A 2.011 in N/A 0.0679 in N/A 1.8859 in N/A 1230 lb N/A 1530 lb N/A Standard Type N/A No Seals
TW20UU N/A 1.2500 in N/A 2.0000 in N/A 2.625 in N/A 2.011 in N/A 0.0679 in N/A 1.8859 in N/A 1230 lb N/A 1530 lb N/A Standard Type N/A Seals on Both Ends
TW 20-OP N/A 1.2500 in N/A 2.0000 in N/A 2.625 in N/A 2.011 in N/A 0.0679 in N/A 1.8859 in N/A 1230 lb N/A 1530 lb N/A Open Type N/A No Seals
TW 20 UU-OP N/A 1.2500 in N/A 2.0000 in N/A 2.625 in N/A 2.011 in N/A 0.0679 in N/A 1.8859 in N/A 1230 lb N/A 1530 lb N/A Open Type N/A Seals on Both Ends
TW24 N/A 1.5000 in N/A 2.3750 in N/A 3.000 in N/A 2.422 in N/A 0.0859 in N/A 2.2389 in N/A 1480 lb N/A 1850 lb N/A Standard Type N/A No Seals
Unit of Measure
1 2