Small Parts & Bearings - an MBA company

Covid-19 Update!! Current supply status.

Trading by online order and email.
Outbound Deliveries: Allow a few extra days within Australia and extra 7 days for overseas deliveries.
Pre-orders and Backorders: Allow extra 7 days due to quarantine precautions.
Distributors: Most MBA distributors are open and able to contact us using the distributor phone line.

Hospitals, medical equipment repairs and manufacture and bio research teams please email us if you need emergency contacts for equipment spare parts.

WBC48ZZA NTN


Cross Referenced Part Numbers



MR84A-ZZMC3 NTN part number WBC4-8-ZZA





ID (d): 4.000. OD (D): 8.000. Width (B): 3.000.

Online Price: 0.00     
Stock: 4     


Category Matches

Gears Inch Bevel


Gears - Bevel - 48 Diametrical Pitch - Plastic
Gears - Bevel - 48 Diametrical Pitch - Plastic

Also see combined categories:
All Imperial Bevel Gears

For 90o angle power transfer. Ratios exceeding 1 to 1. Nylon and Acetal.

20o Pressure Angle. Do not mix gears from different sets. See Gears - Mitre for 1:1 ratios. For easy ready selected sets of 90o gears please see the HES website.

Related Information:


Pins Taper


Pins - Taper - Imperial - Miniature - Carbon Steel
Pins - Taper - Imperial - Miniature - Carbon Steel

Also see combined categories:
All Imperial Taper Pins

Imperial Sizes Tapered 1:48 (1/4 in. per foot). Miniature sizes.


Related Information:


Pins - Taper - Imperial - Miniature - Stainless Steel
Pins - Taper - Imperial - Miniature - Stainless Steel

Also see combined categories:
All Imperial Taper Pins

Imperial Sizes Tapered 1:48 (1/4 in. per foot). Miniature sizes.


Related Information:


Pins - Taper - Imperial - Standard - Carbon Steel
Pins - Taper - Imperial - Standard - Carbon Steel

Also see combined categories:
All Imperial Taper Pins

Imperial Sizes Tapered 1:48 (1/4 in. per foot). Standard sizes numbers 0 to 14.


Related Information:


Pins - Taper - Imperial - Standard - Stainless Steel
Pins - Taper - Imperial - Standard - Stainless Steel

Also see combined categories:
All Imperial Taper Pins

Imperial Sizes Tapered 1:48 (1/4 in. per foot). Standard sizes numbers 0 to 14.


Related Information:


Pins - Taper - Imperial - Extractable - External Thread - Stainless Steel
Pins - Taper - Imperial - Extractable - External Thread - Stainless Steel

Also see combined categories:
All Imperial Taper Pins

Imperial Sizes Tapered 1:48 (1/4 in. per foot). Standard sizes numbers 0 to 14.

Threaded externally for easy extraction.

Related Information:


Gears Inch Spur


Gears - Spur - 48DP - 14.5 Degree - Brass
Gears - Spur -  48DP - 14.5 Degree - Brass

Also see combined categories:
All 48DP Spur Gears 14.5 Degree

PCD = No. of Teeth x 0.529mm (1/48 in.). 14.5o Pressure Angle. DP stands for Diametrical Pitch and is an imperial measurement system.

Plastic and metallic. FairlocTM Hub Type require controlled shaft tolerances between 0.0025 and 0.0203 mm Clearance. 48 Diametrical Pitch. Approx 1.66mm between teeth. For easy ready selected sets of rack and gear please see the HES website.

Related Information:


Gears - Spur - 48DP - 14.5 Degree - Plastic
Gears - Spur -  48DP - 14.5 Degree - Plastic

Also see combined categories:
All 48DP Spur Gears 14.5 Degree

PCD = No. of Teeth x 0.529mm (1/48 in.). 14.5o Pressure Angle. Nylon. DP stands for Diametrical Pitch and is an imperial measurement system.

Plastic and metallic. FairlocTM Hub Type require controlled shaft tolerances between 0.0025 and 0.0203 mm Clearance. 48 Diametrical Pitch. Approx 1.66mm between teeth. For easy ready selected sets of rack and gear please see the HES website.

Related Information:


Gears - Spur - 48DP - 20 Degree - Aluminium
Gears - Spur -  48DP - 20 Degree - Aluminium

Also see combined categories:
All 48DP Spur Gears 20 Degree
All 48DP Spur Gears 20 Degree Metal

PCD = No. of Teeth x 0.529mm (1/48 in.). 20o Pressure Angle. 2024 and 5052 aluminium. DP stands for Diametrical Pitch and is an imperial measurement system.

Plastic and metallic. FairlocTM Hub Type require controlled shaft tolerances between 0.0025 and 0.0203 mm Clearance. 48 Diametrical Pitch. Approx 1.66mm between teeth. For easy ready selected sets of rack and gear please see the HES website.

Related Information:


Gears - Spur - 48DP - 20 Degree - Plastic
Gears - Spur -  48DP - 20 Degree - Plastic

Also see combined categories:
All 48DP Spur Gears 20 Degree
All 48DP Spur Gears 20 Degree Plastic

PCD = No. of Teeth x 0.529mm (1/48 in.). 20o Pressure Angle. Acetal and nylon. DP stands for Diametrical Pitch and is an imperial measurement system.

Plastic and metallic. FairlocTM Hub Type require controlled shaft tolerances between 0.0025 and 0.0203 mm Clearance. 48 Diametrical Pitch. Approx 1.66mm between teeth. For easy ready selected sets of rack and gear please see the HES website.

Related Information:


Gears - Spur - 48DP - 20 Degree - Stainless
Gears - Spur -  48DP - 20 Degree - Stainless

Also see combined categories:
All 48DP Spur Gears 20 Degree
All 48DP Spur Gears 20 Degree Metal

PCD = No. of Teeth x 0.529mm (1/48 in.). 20o Pressure Angle. 303 stainless steel. DP stands for Diametrical Pitch and is an imperial measurement system.

Plastic and metallic. FairlocTM Hub Type require controlled shaft tolerances between 0.0025 and 0.0203 mm Clearance. 48 Diametrical Pitch. Approx 1.66mm between teeth. For easy ready selected sets of rack and gear please see the HES website.

Related Information:


You may also be interested in

Gears Inch Racks


Gear Racks - 48DP - 14.5 PA - Steel
Gear Racks -  48DP - 14.5 PA - Steel

Also see combined categories:
All Imperial Gear Racks
All All Gear Racks

14.5o Pressure Angle. DP stands for Diametrical Pitch imperial sizes.

Lengths longer than 1mtr can only be shipped internationally using Express not post. Please do not select post at checkout for long lengths. 48 DP. Approx 1.66mm between teeth. For easy ready selected sets of rack and gear please see the HES website.


Park 480 E-Flite Parts
Park 480 E-Flite Parts


Bearings and Spare Parts

Where alternative parts are offered, we make no claims as to their suitability. Selection of the most suitable bearings and parts is the responsibility of the customer. We recommend you replace bearings with the same type if that type is working well. High speed caged bearings are better suited to handle vibration than standard caged bearings.


Worm Gears - 48DP Series 1 - Metallic
Worm Gears - 48DP Series 1 - Metallic

Also see combined categories:
All Worm Gears
All Imperial Worm Gears

Worms and Gears must be chosen from the same pitch and series to match. DP is Diametrical Pitch.

14.5o Pressure Angle - 3.35o Lead Angle - 1 Lead. Includes anti-backlash series. A single start worm and gear will provide a ratio equivalent to the number of teeth on the gear. A double start worm and gear will provide a ratio of half the number of teeth on the gear.

Related Information:


Hobby Gears - Spur - 48DP
Hobby Gears - Spur - 48DP


A small selection of popular 48DP Plastic/ Metal Pinion and Spur gears

See main listings under Gears for sizes not listed here. To work out the pitch diameter of a 48DP spur gear, divide multiply the no of teeth by 0.52917.

Related Information:


Circlips - External - Grooveless
Circlips - External - Grooveless

Also see combined categories:
All External Circlips

Includes MIL-R-21248/MS 90707 - Styles M1440 / Ellison GR / Seeger G and GA. Retaining rings. Snap Rings (USA).

Reusable tapered section rings for grooveless shafts like plastics, tubes or castings. Can be used where adjustable ring placement is desired - like progressively tightening a compression spring.

Related Information:


Couplings - Slit Type - Standard
Couplings - Slit Type - Standard

Also see combined categories:
All Helical and Slit Couplings

Aluminium - Stainless Steel - Flexible - Zero Backlash. 0.1 to 35 Nm. 2400 to 48000 rpm.

High Torsional Stiffness. Zero Backlash.

Related Information:


Pins - Roll - Carbon Steel
Pins - Roll - Carbon Steel

Also see combined categories:
All Roll Pins

Plain carbon spring steel DIN1481.


Related Information:


Pins - Roll - Stainless Steel - 300 Grade
Pins - Roll - Stainless Steel - 300 Grade

Also see combined categories:
All Roll Pins

304 grade DIN1481.


Related Information:


Pins - Roll - Stainless Steel - 420 Grade
Pins - Roll - Stainless Steel - 420 Grade

Also see combined categories:
All Roll Pins

420 grade DIN1481.


Related Information:


Pins - Roll - Zinc Plated
Pins - Roll - Zinc Plated

Also see combined categories:
All Roll Pins

Zinc plated spring steel DIN1481.


Related Information:


Pins - Coiled - Plain - Heavy Duty
Pins - Coiled - Plain - Heavy Duty

Also see combined categories:
All Coiled Pins

ASME B18.8.3M / ISO 8748 Heavy Duty Spirol Pins. Coiled roll pin.


Related Information:


Hexagonal Bar - Titanium Ti-Gr2 - Rolled
Hexagonal Bar - Titanium Ti-Gr2 - Rolled

Also see combined categories:
All Metal Bar - Hexagonal

Cold rolled hex bar to ASTM B348

Saw Cut Ends.


Servo Motor - Hobby - General
Servo Motor - Hobby - General

Also see combined categories:
All Hobby Servo Motors

For cars, planes, boats and helicopters. JR, Spektrum, Futaba and Hitec

Gear Strength: Using nylon as a base, Karbonite gears are 4x the strength, Metal gears 16x and Titanium Alloy 48x.

Related Information:


Hexagonal Bar - Titanium Ti-Gr2 - Drawn
Hexagonal Bar - Titanium Ti-Gr2 - Drawn

Also see combined categories:
All Metal Bar - Hexagonal

Cold rolled and hot drawn hex bar to ASTM B348

Saw Cut Ends.


Feeler Gauge Stock - C1095 Carbon Steel
Feeler Gauge Stock - C1095 Carbon Steel


Used for close spacing and extremely tight tolerance situation.

Rc48-62 hardness. High carbon steel. Short flat lengths have rounded ends and are marked for size. Coiled lengths are etched every 6 inches and can be easily cut to length. 12.7mm wide.


Main Pages



Freight Rates
Terms and Conditions
Privacy Policy

Registered Australian Company: Small Parts & Bearings Pty Ltd (ABN 79 121 865 414)

Small Parts & Bearings offers 126905 products in 2519 categories including couplings, screws, hex nuts, ball bearings, roller bearings, thrust bearings, ceramic and hybrid bearings, stainless steel bearings, miniature bearings, shafting, corrosion resistant - see the full listing in the Online Catalogue. We have excellent Freight Rates within Australia and worldwide. We offer a choice of delivery with a signature required, or cheaper options with no signature required. The no signature required options are at the customer’s risk once the goods leave our store.

Using the links throughout this site you will find extensive information including catalogues, technical data, and other product specific information. We sell our products worldwide through our online store and our overseas freight rates are competitive for fully traceable courier delivery.

Small Parts & Bearings is part of MBA Group offering a select range from the MBA Group catalogue.

Small Parts & Bearings products are not authorised for sale into the USA or Canada due to the reluctance of Australian insurers to provide product liability insurance into those two countries.

Information on this website is Copyright Small Parts & Bearings 1997. All rights reserved.

Freight Rates
Terms and Conditions
Privacy Policy

Registered Australian Company: Small Parts & Bearings Pty Ltd (ABN 79 121 865 414)

Small Parts & Bearings offers 126905 products in 2519 categories including couplings, screws, hex nuts, ball bearings, roller bearings, thrust bearings, ceramic and hybrid bearings, stainless steel bearings, miniature bearings, shafting, corrosion resistant - see the full listing in the Online Catalogue. We have excellent Freight Rates within Australia and worldwide. We offer a choice of delivery with a signature required, or cheaper options with no signature required. The no signature required options are at the customer’s risk once the goods leave our store.

Using the links throughout this site you will find extensive information including catalogues, technical data, and other product specific information. We sell our products worldwide through our online store and our overseas freight rates are competitive for fully traceable courier delivery.

Small Parts & Bearings is part of MBA Group offering a select range from the MBA Group catalogue.

Small Parts & Bearings products are not authorised for sale into the USA or Canada due to the reluctance of Australian insurers to provide product liability insurance into those two countries.

Information on this website is Copyright Small Parts & Bearings 1997. All rights reserved.