# 25 roller chain. Mates with 1/4" pitch, #25 chain sprockets. For master link, see CAT# ML-25 CAT# CHN-25

12 tooth nylon sprocket for #25 chain. 6.5mm flatted bore. 0.5" long collar. CAT# GR-87

22mm diameter x 40mm long medium-soft rubber wheel. Nylon insert through middle of wheel with 6mm bore. Protrudes from one side, 9mm with slot. CAT# RW-4

23.5" inch length of #25 roller chain. Mates with 1/4" pitch, #25 chain sprockets. Master link included. CAT# CHN-23

2" diameter, 24 tooth metal sprocket for #25 roller chain. 13/32" (10mm) half-moon bore with 10mm collar. CAT# GR-100

2.34" diameter, 28 tooth metal sprocket for #25 roller chain. 13/32" (10mm) half-moon bore with 10mm collar. CAT# GR-101

INA BEARING CO # FC66141.6. 40 roller bearings in race with outer ring. Dimensions including outer ring: 3.03" O.D. x 2.2" I.D. x 0.16" high. CAT# BR-9

32mm diameter x 11mm wide. 8mm bore. CAT# GR-126

Nylon. 1" diameter x 0.25" wide. 0.26" flatted bore. CAT# GR-113

31.5mm o.d. x 19.5mm i.d. x 2mm thick. 20 roller bearings in race with outer ring. CAT# BR-18

38mm diameter x 7mm wide. 9mm collar with 6mm bore. Mates with gear on SMT-119 and others. CAT# GR-121

38mm diameter x 6mm wide. 10mm bore. 7mm collar with set screw. CAT# GR-129

40mm diameter x 8.0mm wide. 8mm flatted bore. CAT# GR-127

Four matched unbreakable plastic gears. The three larger gears are beveled on one side and can mesh at 90 degrees as well as the normal 180 degree angle. They have 5mm bores. Inserts are supplie... CAT# GR-86

Made for a Kodak 35mm film scanner, this high-quality plastic gear train contains four gears. Three are identical dual gears with 36 and 10 teeth. The other has 18 and 22 teeth. The unit snaps toge... CAT# GR-131

0.325" bore. Doesn't mate with the other gears on our website. CAT# GR-105

42 tooth sprocket for #25 roller chain. 3.5" diameter. Attaches to half-moon shaft. CAT# GR-123

44 tooth metal cog pulley. 28mm dia. x 11mm wide. 2mm pitch. Mates with our belt, CAT# CGB-660. 10mm bore with 3mm holes for fastening pin (not included). CAT# GR-119

47mm diameter x 8mm wide. Precision bearing (NSK 6000Z) with 10mm i.d. CAT# GR-128

8" long x 1.05" diameter aluminum roller on a 9.75" x 0.375" diameter metal axle. Ball bearings at both ends, NMB # RI-1438D. CAT# RW-7

Cogbelt: Gates 423W00648 148MC. 3mm pitch. 350mm circumference x 6mm wide. Cogpulley: 3mm pitch. Metal pulley with 14 cogs. 0.325" diameter flatted bore. 27mm diameter nylon gear - mates wi... CAT# GR-122

Black plastic compound gear. The smaller gear is 0.28" wide, has 14 teeth and a dia. of 0.53". The larger gear is 0.46" wide, has 21 teeth and a diameter of 0.77". 6 mm (0.24") bore. CAT# GR-78

Dual cog belt pulley with flanged pillow block. For belts with 3mm (1/8") pitch. Precision bearings. Inner gear has 28 cogs. 26mm diameter x 11.30mm wide. The outer gear has 30 cogs is 28mm dia. x ... CAT# GR-130

Velleman Kits # KNS7. Fun with gears and motors. Small 3 Vdc motor, metal bracket and axles, and an assortment of small plastic gears and collars to produce a gear train of various ratios. Note: ... CAT# GR-84

12 x 18 x 16mm one-way needle bearing. Includes 12mm adapter for 8mm shaft with 10mm shank. This bearing and adapter are part of roller clutch assembly, CAT# CH-8. CAT# BR-14

CAT# ML-25

Shiny metal roller wheel with roller bearings and nylon bushings. 28mm diameter and length of 85mm (3.35") that tapers at the ends. 8mm bore for axel. CAT# RW-5

0.5" diameter x 1.2" long aluminum roller with ball bearings at each end. Bearings have a 4-40 threaded bore on both ends. CAT# BR-11

11mm diameter x 15mm long roller assembly. 3.5mm diameter bore. Bearings at both ends. One end has a slightly raised and rolled 7mm diameter bushing. CAT# BR-12

0.1" diameter thick x 2.6" overall diameter. CAT# FT-3

Roller clutch with one-way bearing. Rotates freely in one direction; fixed in other direction. 15 tooth sprocket for 1/4" Number 25 roller chain. Fits 8mm shaft with 10mm collar. 3mm hole for rete... CAT# CH-10

32.5mm dia. x 20mm wide nylon roller or pulley with 5mm high sides. NSK 6000Z bearings on each side with 10mm i.d. CAT# RW-6

40 Teeth 80XL025. Synchronous drive "XL" Gearbelts. 0.25" wide. 1/5" pitch. CAT# CGB-40

Two medium-soft rubber wheels, 26mm long x 19mm diameter, on a nylon axle, 91mm long x 4mm diameter. CAT# RW-3

Two nylon gears: 26 cog, 1.08" diameter x 0.27" wide. 0.18" collar. 0.25" diameter bore. 34 cog, 1.41" diameter x 0.23" wide. 0.1" collar. 0.33" diameter flatted bore. CAT# GR-109

Eleven 0.25" diameter ball bearings. 1.27" O.D., 0.66" I.D. CAT# BR-10

Two 22-cog, 1.17" diameter nylon gears with 5.8" stainless steel axle. The 0.25" diameter axle is attached to one gear. The other end is flatted and mates with the other gear. CAT# GR-40

0.69" diameter plastic wheel fits 1/4" diameter shaft. 0.5" wide overall. Has groove on one side that fits O-ring-type drive belt. CAT# PY-2

Five matched break-resistant plastic gears ranging from 0.44" diameter (10 teeth) to 2.02" (50 teeth). Gears are molded with 0.15" (4mm) bores and come with inserts which reduce the bore to 0.065" ... CAT# GR-5