Product Overview

#100 Stainless Steel Sprockets are the highest-pitch ANSI standard sprocket in our stainless range, built for No.100 roller chain at a 1-1/4-inch pitch. At this scale, these sprockets are serious mechanical components: outside diameters from 5.010 inches on an 11-tooth up to 9.040 inches on a 21-tooth, hub diameters reaching 4-1/2 inches, and piece weights from 5.3 to 15.3 pounds. The size and mass of a #100 sprocket reflects the magnitude of the drives it serves — main-shaft drives on large agricultural combines, heavy industrial conveyor head-stations, mining-support equipment conveyors, and large-format processing machinery where no smaller chain pitch can handle the torque requirements.

Produced in 304-grade stainless steel at our Hangzhou facility, the #100 SS range covers 11 through 21 teeth in the standard B-hub (hubbed) configuration. Each sprocket is machined to ANSI B29.1 tooth-form tolerances with bore and hub dimensions conforming to the ANSI standard dimensional series. This makes each piece a direct-fit replacement for equivalent Tsubaki RS100SS, Martin 100SS, Browning/Rexnord 100SS, and Dodge 100SS stainless components — sourced factory-direct from Hangzhou at 40–60% below the prices these brands typically carry through North American and European distributor channels.

The stainless steel specification for No.100 chain drives is most commonly called for in heavy food-processing installations — large fish-processing plants, red-meat abattoirs, large-scale dairy operations — where main conveyor shaft drives must withstand daily high-pressure hot-water and chemical wash-down without rusting or contaminating the production environment. In these applications, the lifetime total cost advantage of stainless over coated carbon steel is particularly pronounced: a main-shaft sprocket operating in a daily CIP environment can last 5–8 years in 304 stainless versus 12–18 months for an equivalent zinc-plated carbon steel part before corrosion forces replacement.

Technical Parameters & Dimensional Data

Complete specifications for all standard #100 SS configurations. All dimensions in US customary units. Type B-Hub is the standard configuration for driven-shaft mounting. Custom bore, keyway, and taper-lock options available on request.

Manufacturing Excellence at Heavy-Pitch Scale

Producing a #100 stainless steel sprocket to the dimensional tolerances that matter for smooth, quiet chain engagement is a more demanding task than it might appear from the outside. The 1-1/4-inch pitch and 0.625-inch roller diameter define a hobbing target that requires careful tool-setup verification and first-article inspection before a production run is released. A seating-curve radius that is even 0.005 inches undersized on a #100 sprocket will cause the roller to bottom-out in the tooth gullet rather than seat on the seating curve, producing a hard impact on every tooth engagement that the operator hears as a “clunk” and the chain experiences as a shock load.

Our hobbing programme for #100 sprockets uses dedicated tooling qualified specifically for the No.100 roller geometry. First-article inspection on an optical comparator or CMM is performed at the start of every production batch. Bore machining is carried out as a separate CNC turning operation after hobbing, ensuring the bore axis is concentric with the pitch circle of the tooth form — not just with the blank outside diameter. On large-hub sprockets like the #100 range, this distinction matters: a blank that is slightly oval from the turning operation can produce a bore that appears concentric with the blank but is eccentric relative to the pitch circle, generating cyclic chain-tension variation that accelerates both sprocket and chain wear.

For applications demanding hardened tooth flanks rather than corrosion resistance — agricultural combine main drives, heavy timber-deck conveyors, mining-support systems — C45 carbon steel with high-frequency induction hardening to 40–50 HRC on the tooth flanks is available across the full #100 tooth range. Hardness test certificates are provided with C45 HF-quenched shipments at no additional charge.

Primary Application Sectors

The No.100 chain pitch occupies the upper tier of the ANSI heavy-series chain family. Applications at this pitch are characterised by high torque, large shaft diameters, and often by demanding environmental conditions — which is exactly why the stainless steel variant of the #100 sprocket is specified rather than simply defaulting to carbon steel. The sectors below represent the most common current deployments of our #100 SS range.

Key Performance Features

Matching No.100 Drive Components

Main-drive sprockets at No.100 pitch require matched heavy chain and appropriate connecting hardware. We supply the complete No.100 SS drive system, enabling single-source consolidated ordering for new builds and planned refurbishments.

Why Choose Hangzhou Ever-Power for #100 SS Sprockets?

The #100 stainless steel sprocket is not a commodity item — it is a precision component in a main drive that, if it fails or runs noisily, shuts down an entire production line. Machine builders and maintenance managers who source these parts from Ever-Power factory-direct do so because they need the combination of dimensional accuracy, material traceability, and delivery reliability that these applications demand — and because factory-direct pricing makes it economically rational to keep adequate spare stock on site rather than ordering on an emergency basis from a distributor with extended lead times.

Our production team in Hangzhou has specific experience with heavy-pitch ANSI stainless sprockets for the food-processing and agricultural sectors that represent the largest share of our #100 SS volume. We understand the documentation requirements of food-grade supplier qualification programmes, the urgency of unplanned maintenance orders, and the value of getting the bore dimension right the first time without back-and-forth rework. These practical priorities shape every aspect of how we handle #100 SS orders from initial quotation through to shipment confirmation.

Customer Reviews

Lead Times & How to Order

Standard stock-bore #100 SS sprockets in the most common tooth counts (11T, 12T, 15T, 17T, 20T) ship within 5–8 business days. Other tooth counts and all custom-bore orders: 10–15 business days from drawing confirmation and deposit receipt. For large tooth counts or duplex configurations, allow 15–18 business days. MOQ: 1 piece for stock items; 10 pieces per part number for custom configurations. Volume pricing from 10 pieces per SKU at this pitch; annual blanket orders with scheduled call-offs available for high-volume maintenance programmes.

Frequently Asked Questions