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  • Martin - Taper Bushing (LG: Large Series)

    • Martin - Taper Bushing (LG: Large Series)

    Martin

    SKU:
    TB-LG-NA225

    Product Description

    Martin - Taper Bushing (LG: Large Series)

    Martin Sprocket & Gear — 480 Configurations

    Overview
    Specifications
    Applications

    Martin bushings are precision-machined components that provide a secure, concentric connection between shafts and power transmission components like sheaves, sprockets, and couplings. The taper-lock or QD (Quick Detachable) design allows easy installation and removal without disturbing the position of the driven component on the shaft — a massive time saver during maintenance.

    Martin has been manufacturing bushings and power transmission components in the United States since 1928. Every bushing is machined from high-strength steel or cast iron, with bore tolerances held tight enough to ensure zero wobble at operating speed. The split-taper design creates a uniform clamping force around the shaft, eliminating the stress concentrations that cause setscrew-mounted components to slip or damage shafts.

    Available in 480 bore sizes (TB4040-1-7/16, TB4040-1-1/2, TB4040-1-9/16, TB4040-1-5/8, TB4040-1-11/16 and 475 more) to match your shaft and component requirements.

    • Precision Machined — bore tolerances ensure zero wobble at operating speed
    • Split-Taper Design — uniform clamping force without shaft damage
    • Quick Detachable — easy installation and removal for fast maintenance
    • High-Strength Steel — rated for full-load power transmission applications
    • USA Heritage — Martin Sprocket & Gear, manufacturing since 1928
    Martin Sprocket & Gear Warranty — Martin products are warranted against defects in material and workmanship. Contact us for warranty claims and replacement.
    SKUSeriesBoreBushing ODBushing LengthTorque RatingWeight
    Series 4040 — OD: 6.000" - 152.4mm — Torque: 77,300 in-lb (41 bores)
    TB4040-1-7/16 4040 1-7/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-1-1/2 4040 1-1/2 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-1-9/16 4040 1-9/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-1-5/8 4040 1-5/8 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-1-11/16 4040 1-11/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-1-3/4 4040 1-3/4 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-1-13/16 4040 1-13/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-1-7/8 4040 1-7/8 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-1-15/16 4040 1-15/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-2 4040 2 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 20.70 lbs
    TB4040-2-1/8 4040 2-1/8 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-2-3/16 4040 2-3/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-2-1/4 4040 2-1/4 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-2-5/16 4040 2-5/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-2-3/8 4040 2-3/8 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-2-7/16 4040 2-7/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-2-1/2 4040 2-1/2 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-2-9/16 4040 2-9/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-2-5/8 4040 2-5/8 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-2-11/16 4040 2-11/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-2-3/4 4040 2-3/4 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-2-13/16 4040 2-13/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-2-7/8 4040 2-7/8 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-2-15/16 4040 2-15/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-3 4040 3 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 16.50 lbs
    TB4040-3-1/16 4040 3-1/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-3-1/8 4040 3-1/8 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-3-3/16 4040 3-3/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-3-1/4 4040 3-1/4 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-3-5/16 4040 3-5/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-3-3/8 4040 3-3/8 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-3-7/16 4040 3-7/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-3-1/2 4040 3-1/2 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-3-9/16 4040 3-9/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-3-5/8 4040 3-5/8 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-3-11/16 4040 3-11/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-3-3/4 4040 3-3/4 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-3-13/16 4040 3-13/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-3-7/8 4040 3-7/8 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-3-15/16 4040 3-15/16 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 0.00 lbs
    TB4040-4 4040 4 6.000" - 152.4mm 4.000" - 101.6mm 77,300 in-lb 12.00 lbs
    Series ? — OD: — — Torque: — (312 bores)
    Series 4545 — OD: 6.500" - 165.1mm — Torque: 106,000 in-lb (40 bores)
    TB4545-1-15/16 4545 1-15/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-2 4545 2 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 28.86 lbs
    TB4545-2-1/8 4545 2-1/8 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-2-3/16 4545 2-3/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-2-1/4 4545 2-1/4 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-2-5/16 4545 2-5/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-2-3/8 4545 2-3/8 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-2-7/16 4545 2-7/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-2-1/2 4545 2-1/2 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-2-9/16 4545 2-9/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-2-5/8 4545 2-5/8 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-2-3/4 4545 2-3/4 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-2-13/16 4545 2-13/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-2-7/8 4545 2-7/8 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-2-15/16 4545 2-15/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-3 4545 3 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 24.54 lbs
    TB4545-3-1/16 4545 3-1/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-3-1/8 4545 3-1/8 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-3-3/16 4545 3-3/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-3-1/4 4545 3-1/4 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-3-5/16 4545 3-5/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-3-3/8 4545 3-3/8 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-3-7/16 4545 3-7/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-3-1/2 4545 3-1/2 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-3-9/16 4545 3-9/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-3-5/8 4545 3-5/8 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-3-11/16 4545 3-11/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-3-3/4 4545 3-3/4 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-3-13/16 4545 3-13/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-3-7/8 4545 3-7/8 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-3-15/16 4545 3-15/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-4 4545 4 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 18.60 lbs
    TB4545-4-1/16 4545 4-1/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-4-1/8 4545 4-1/8 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-4-3/16 4545 4-3/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-4-1/4 4545 4-1/4 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-4-5/16 4545 4-5/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-4-3/8 4545 4-3/8 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-4-7/16 4545 4-7/16 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    TB4545-4-1/2 4545 4-1/2 6.500" - 165.1mm 4.500" - 114.3mm 106,000 in-lb 0.00 lbs
    Series 5050 — OD: — — Torque: — (40 bores)
    TB5050-2-5/16 5050 2-5/16 — — — 0.00 lbs
    TB5050-2-7/16 5050 2-7/16 — — — 0.00 lbs
    TB5050-2-1/2 5050 2-1/2 — — — 0.00 lbs
    TB5050-2-9/16 5050 2-9/16 — — — 0.00 lbs
    TB5050-2-5/8 5050 2-5/8 — — — 0.00 lbs
    TB5050-2-11/16 5050 2-11/16 — — — 0.00 lbs
    TB5050-2-3/4 5050 2-3/4 — — — 0.00 lbs
    TB5050-2-13/16 5050 2-13/16 — — — 0.00 lbs
    TB5050-2-7/8 5050 2-7/8 — — — 0.00 lbs
    TB5050-2-15/16 5050 2-15/16 — — — 0.00 lbs
    TB5050-3 5050 3 — — — 35.80 lbs
    TB5050-3-1/16 5050 3-1/16 — — — 0.00 lbs
    TB5050-3-1/8 5050 3-1/8 — — — 0.00 lbs
    TB5050-3-3/16 5050 3-3/16 — — — 0.00 lbs
    TB5050-3-5/16 5050 3-5/16 — — — 0.00 lbs
    TB5050-3-3/8 5050 3-3/8 — — — 0.00 lbs
    TB5050-3-7/16 5050 3-7/16 — — — 0.00 lbs
    TB5050-3-1/2 5050 3-1/2 — — — 0.00 lbs
    TB5050-3-9/16 5050 3-9/16 — — — 0.00 lbs
    TB5050-3-5/8 5050 3-5/8 — — — 0.00 lbs
    TB5050-3-3/4 5050 3-3/4 — — — 0.00 lbs
    TB5050-3-13/16 5050 3-13/16 — — — 0.00 lbs
    TB5050-3-7/8 5050 3-7/8 — — — 0.00 lbs
    TB5050-3-15/16 5050 3-15/16 — — — 0.00 lbs
    TB5050-4 5050 4 — — — 27.94 lbs
    TB5050-4-1/16 5050 4-1/16 — — — 0.00 lbs
    TB5050-4-1/8 5050 4-1/8 — — — 0.00 lbs
    TB5050-4-3/16 5050 4-3/16 — — — 0.00 lbs
    TB5050-4-1/4 5050 4-1/4 — — — 0.00 lbs
    TB5050-4-5/16 5050 4-5/16 — — — 0.00 lbs
    TB5050-4-3/8 5050 4-3/8 — — — 0.00 lbs
    TB5050-4-7/16 5050 4-7/16 — — — 0.00 lbs
    TB5050-4-1/2 5050 4-1/2 — — — 0.00 lbs
    TB5050-4-5/8 5050 4-5/8 — — — 0.00 lbs
    TB5050-4-11/16 5050 4-11/16 — — — 0.00 lbs
    TB5050-4-3/4 5050 4-3/4 — — — 0.00 lbs
    TB5050-4-13/16 5050 4-13/16 — — — 0.00 lbs
    TB5050-4-7/8 5050 4-7/8 — — — 0.00 lbs
    TB5050-4-15/16 5050 4-15/16 — — — 0.00 lbs
    TB5050-5 5050 5 — — — 20.20 lbs
    Series 6050 — OD: — — Torque: — (37 bores)
    TB6050-3 6050 3 — — — 60.00 lbs
    TB6050-3-3/8 6050 3-3/8 — — — 0.00 lbs
    TB6050-3-13/16 6050 3-13/16 — — — 0.00 lbs
    TB6050-3-7/8 6050 3-7/8 — — — 0.00 lbs
    TB6050-3-15/16 6050 3-15/16 — — — 0.00 lbs
    TB6050-4 6050 4 — — — 60.00 lbs
    TB6050-4-1/16 6050 4-1/16 — — — 0.00 lbs
    TB6050-4-1/8 6050 4-1/8 — — — 0.00 lbs
    TB6050-4-3/16 6050 4-3/16 — — — 0.00 lbs
    TB6050-4-1/4 6050 4-1/4 — — — 0.00 lbs
    TB6050-4-5/16 6050 4-5/16 — — — 0.00 lbs
    TB6050-4-3/8 6050 4-3/8 — — — 0.00 lbs
    TB6050-4-7/16 6050 4-7/16 — — — 0.00 lbs
    TB6050-4-1/2 6050 4-1/2 — — — 0.00 lbs
    TB6050-4-9/16 6050 4-9/16 — — — 0.00 lbs
    TB6050-4-5/8 6050 4-5/8 — — — 0.00 lbs
    TB6050-4-11/16 6050 4-11/16 — — — 0.00 lbs
    TB6050-4-3/4 6050 4-3/4 — — — 0.00 lbs
    TB6050-4-13/16 6050 4-13/16 — — — 0.00 lbs
    TB6050-4-15/16 6050 4-15/16 — — — 0.00 lbs
    TB6050-5 6050 5 — — — 55.00 lbs
    TB6050-5-1/16 6050 5-1/16 — — — 0.00 lbs
    TB6050-5-1/8 6050 5-1/8 — — — 0.00 lbs
    TB6050-5-3/16 6050 5-3/16 — — — 0.00 lbs
    TB6050-5-1/4 6050 5-1/4 — — — 0.00 lbs
    TB6050-5-5/16 6050 5-5/16 — — — 0.00 lbs
    TB6050-5-3/8 6050 5-3/8 — — — 0.00 lbs
    TB6050-5-7/16 6050 5-7/16 — — — 0.00 lbs
    TB6050-5-1/2 6050 5-1/2 — — — 0.00 lbs
    TB6050-5-9/16 6050 5-9/16 — — — 0.00 lbs
    TB6050-5-5/8 6050 5-5/8 — — — 0.00 lbs
    TB6050-5-11/16 6050 5-11/16 — — — 0.00 lbs
    TB6050-5-3/4 6050 5-3/4 — — — 0.00 lbs
    TB6050-5-13/16 6050 5-13/16 — — — 0.00 lbs
    TB6050-5-7/8 6050 5-7/8 — — — 0.00 lbs
    TB6050-5-15/16 6050 5-15/16 — — — 0.00 lbs
    TB6050-6 6050 6 — — — 45.60 lbs
    Series 7060 — OD: — — Torque: — (8 bores)
    TB7060-5-1/4 7060 5-1/4 — — — 0.00 lbs
    TB7060-5-1/2 7060 5-1/2 — — — 0.00 lbs
    TB7060-6 7060 6 — — — 76.58 lbs
    TB7060-6-1/4 7060 6-1/4 — — — 0.00 lbs
    TB7060-6-7/16 7060 6-7/16 — — — 0.00 lbs
    TB7060-6-1/2 7060 6-1/2 — — — 0.00 lbs
    TB7060-6-15/16 7060 6-15/16 — — — 0.00 lbs
    TB7060-7 7060 7 — — — 52.20 lbs
    Series 10085 — OD: — — Torque: — (2 bores)
    TB10085-8-1/4 10085 8-1/4 — — — 0.00 lbs
    TB10085-9-1/2 10085 9-1/2 — — — 0.00 lbs

    Where Martin Bushings Keep Things Running

    • Industrial Machinery — sheave, sprocket, and coupling mounting on motor shafts, gearbox outputs, and driven equipment
    • Agricultural Equipment — combine drives, grain handling systems, irrigation pivots, and PTO-driven implements
    • HVAC Systems — fan and blower sheave mounting, pump drives, and air handling units
    • Mining & Aggregate — conveyor drives, crusher components, and screen deck drives
    • Food & Beverage — mixer drives, conveyor systems, and packaging line equipment

    1 All dimensions follow the Lambear tri-format: Imperial fraction – Decimal inches – Metric (mm).

    2 Specifications are catalog values. Contact us for application-specific recommendations.

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