"Where Detail Makes the Difference"
- Longmont, Colorado, U.S.A. -
1 (800) 472-2530         Local: (303) 772-1901         Fax: (303) 772-8534

O, HO, & N Scale Wheelsets & Trucks

O Scale Nickel Silver Plated Brass Insulated Wheelsets
These wheels follow NMRA RP-25 Standards.
One wheel is insulated from the all-metal axle.
The entire wheelset is non-magnetic.
20050 33" Wheelset

4 Axles Per Pack

$12.95
20190   Bettendorf 50 Ton Truck Pair - Black $5.95
HO Scale Nickel Silver Plated Brass Insulated Wheelsets
These wheels follow NMRA RP-25 Standards.
One wheel is insulated from the all-metal axle.
The entire wheelset is non-magnetic.
The axle length is 1.006" (+- .004")

28" wheels are used on modern Tri-Level Autoracks, some Bi-Level Autoracks, and some older intermodal cars such as Impack spine cars, front runners & four runners - check your prototype.
33" wheels are used on 50 & 70 ton capacity cars (CAPY approximately 150,000 LBS or less).
36" wheels are used on 100 ton capacity cars (CAPY approximately 200,000 LBS), and on all passenger cars no matter the era.
38" wheels are used on 150 ton capacity cars, primarily the center connection trucks on modern intermodal cars with 33" wheels at the coupler ends.
Cabooses can use either 33" or 36" wheels depending on the prototype.

The CAPY information is typically printed on model freight cars and can be used as a guide. Some cars have the wheel size printed on the sides or ends of the car in the data. If you are ever unsure of which size to use, you can simply replace the wheels currently on the car with the same size.

Wheel diameter can be measured with a caliper:
28" wheels measure (28/87.1=.321") in HO scale.
33" wheels measure (33/87.1=.378") in HO scale.
36" wheels measure (36/87.1=.413") in HO scale.
38" wheels measure (38/87.1=.436") in HO scale.
(87.1 = HO scale to prototype ratio. HO scale is 87.1 times smaller than the prototype).

40048 38" Wheels (.110" Tread Width)

12 Axles Per Pack

$13.95
40049 38" Semi-Scale Wheels (.088" Tread Width)

12 Axles Per Pack

$13.95
40050 33" Wheels (.110" Tread Width)

12 Axles Per Pack

$13.95
40051 36" Wheels (.110" Tread Width)

12 Axles Per Pack

$13.95
40052 33" Semi-Scale Wheels (.088" Tread Width)

12 Axles Per Pack

$13.95
40053 28" Semi-Scale Wheels (.088" Tread Width)

12 Axles Per Pack

$13.95
40054 36" Semi-Scale Wheels (.088" Tread Width)

12 Axles Per Pack

$13.95
40055   33" Wheels - Bulk (.110" Tread Width)

100 Axles Per Box / 1200 Axles Per Case

$.99 / Axle (100 Axle Box)
$.89 / Axle (1200 Axle Case)
40056   36" Wheels - Bulk (.110" Tread Width)

100 Axles Per Box / 1200 Axles Per Case

$.99 / Axle (100 Axle Box)
$.89 / Axle (1200 Axle Case)
40058 33" Ball-Bearing Wheels
(Wheels rotate independent of axle points)
(.110" Tread Width)

6 Axles Per Pack

Out of Stock
TBD
40059 36" Ball-Bearing Wheels
(Wheels rotate independent of axle points)
(.110" Tread Width)

6 Axles Per Pack

$19.95
HO Scale Trucks with Brass Wheelsets
40060   Barber S-2 100 Ton Truck $7.95 / Pair
40061   ASF 50 Ton Truck $7.95 / Pair
40062   Bettendorf 50 Ton Truck $7.95 / Pair
40063   Barber 70 Ton Truck $7.95 / Pair
HO Scale High Detail Nickel Plated Brass Insulated Wheelsets
The front and back profile of these wheels is more prototypically accurate.
These wheels follow NMRA RP-25 Standards.
One wheel is insulated from the all metal axle.
The entire wheelset is non-magnetic.
The axle length is 1.006" (+- .004")
40070 33" Wheels (.110" Tread Width)

12 Axles Per Pack

$17.95
40071 36" Wheels (.110" Tread Width)

12 Axles Per Pack

$17.95
40072 33" Semi-Scale Wheels (.088" Tread Width)

12 Axles Per Pack

$17.95
40073 36" Semi-Scale Wheels (.088" Tread Width)

12 Axles Per Pack

$17.95
N Scale Plastic Wheelsets
60020   33" Plastic Wheelsets
100 Axle Pack
$12.95
60021   36" Plastic Wheelsets
100 Axle Pack
$12.95
N Scale Nickel Silver Plated Brass Insulated Wheelsets
These wheels follow NMRA RP-25 Standards.
One wheel is insulated from the all-metal axle.
The entire wheelset is non-magnetic.

33" wheels are used on 50 & 70 ton capacity cars (CAPY approximately 150,000 LBS or less).
36" wheels are used on 100 ton capacity cars (CAPY approximately 200,000 LBS), and on all passenger cars no matter the era.
38" wheels are used on 150 ton capacity cars, primarily the center connection trucks on modern intermodal cars with 33" wheels at the coupler ends.
Cabooses can use either 33" or 36" wheels depending on the prototype.

There is no prototype for the 34.5" wheels used for Micro-Trains trucks. These wheels should be used regardless of car type or CAPY if Micro-Trains trucks are used on the car.

The CAPY information is typically printed on model freight cars and can be used as a guide. Some cars have the wheel size printed on the sides or ends of the car in the data. If you are ever unsure of which size to use, you can simply replace the wheels currently on the car with the same size.

Wheel diameter can be measured with a caliper:
33" wheels measure (33/160=.206") in N scale.
36" wheels measure (36/160=.225") in N scale.
(160 = N scale to prototype ratio. N scale is 160 times smaller than the prototype).

60050 33" Brass Insulated Wheelsets
Axle Length: 0.55"
12 Axles Per Pack
$12.95
60051 36" Brass Insulated Wheelsets
Axle Length: 0.55"
12 Axles Per Pack
$12.95
60052 34.5" Brass Insulated Wheelsets
for Micro-TrainsŪTrucks
Axle Length: 0.537"
12 Axles Per Pack
$12.95
N Scale High Detail Nickel Plated Brass Insulated Wheelsets
The front and back profile of these wheels is more prototypically accurate.
These wheels follow NMRA RP-25 Standards.
One wheel is insulated from the all metal axle.
The entire wheelset is non-magnetic.
60070 33" High Detail Brass Insulated Wheelsets
Axle Length: 0.55"
12 Axles Per Pack
$14.95
60071 36" High Detail Brass Insulated Wheelsets
Axle Length: 0.55"
12 Axles Per Pack
$14.95
60072 34.5" High Detail Brass Insulated Wheelsets
for Micro-TrainsŪ Trucks
Axle Length: 0.537"
12 Axles Per Pack
$14.95

InterMountain Railway Company
P.O. Box 839
Longmont, Colorado
80502-0839